diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/common/editableList.js b/packages/node_modules/@node-red/editor-client/src/js/ui/common/editableList.js
index 00666e5b4..ea1938e5c 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/common/editableList.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/common/editableList.js
@@ -18,7 +18,7 @@
 /**
  * options:
  *   - addButton : boolean|string - text for add label, default 'add'
- *   - buttons : array - list of custom buttons (objects with fields 'label', 'icon', 'title', 'click')
+ *   - buttons : array - list of custom buttons (objects with fields 'id', 'label', 'icon', 'title', 'click')
  *   - height : number|'auto'
  *   - resize : function - called when list as a whole is resized
  *   - resizeItem : function(item) - called to resize individual item
@@ -94,7 +94,7 @@
             }
 
             buttons.forEach(function(button) {
-                var element = $('<a href="#" class="red-ui-button red-ui-button-small red-ui-editableList-addButton" style="margin-top: 4px; margin-right: 5px;"></a>')
+                var element = $('<button type="button" class="red-ui-button red-ui-button-small red-ui-editableList-addButton" style="margin-top: 4px; margin-right: 5px;"></button>')
                     .appendTo(that.topContainer)
                     .on("click", function(evt) {
                         evt.preventDefault();
@@ -103,6 +103,9 @@
                         }
                     });
 
+                if (button.id) {
+                    element.attr("id", button.id);
+                }
                 if (button.title) {
                     element.attr("title", button.title);
                 }
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/tray.js b/packages/node_modules/@node-red/editor-client/src/js/ui/tray.js
index 2e7cd8f03..b7e2325c5 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/tray.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/tray.js
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  **/
-RED.tray = (function() {
+ RED.tray = (function() {
 
     var stack = [];
     var editorStack;
@@ -288,9 +288,9 @@ RED.tray = (function() {
                     right: -(tray.tray.width()+10)+"px"
                 });
                 setTimeout(function() {
-                    if (tray.options.close) {
-                        tray.options.close();
-                    }
+                    try {
+                        if (tray.options.close) { tray.options.close(); }
+                    } catch (ex) { }
                     tray.tray.remove();
                     if (stack.length > 0) {
                         var oldTray = stack[stack.length-1];
diff --git a/packages/node_modules/@node-red/nodes/core/common/20-inject.html b/packages/node_modules/@node-red/nodes/core/common/20-inject.html
index 9bf91ad1e..8e40b8cd8 100644
--- a/packages/node_modules/@node-red/nodes/core/common/20-inject.html
+++ b/packages/node_modules/@node-red/nodes/core/common/20-inject.html
@@ -162,7 +162,62 @@
         height += 16;
         $("#node-input-property-container").editableList('height',height);
     }
-
+    /** Retrieve editableList items (refactored for re-use in the form inject button)*/
+    function getProps(el, legacy) {
+        var result = {
+            props: []
+        }
+        el.each(function(i) {
+            var prop = $(this);
+            var p = {
+                p:prop.find(".node-input-prop-property-name").typedInput('value')
+            };
+            if (p.p) {
+                p.v = prop.find(".node-input-prop-property-value").typedInput('value');
+                p.vt = prop.find(".node-input-prop-property-value").typedInput('type');
+                if(legacy) {
+                    if (p.p === "payload") { // save payload to old "legacy" property
+                        result.payloadType = p.vt;
+                        result.payload = p.v;
+                        delete p.v;
+                        delete p.vt;
+                    } else if (p.p === "topic" && p.vt === "str") {
+                        result.topic = p.v;
+                        delete p.v;
+                    }
+                }
+                result.props.push(p);
+            }
+        });
+        return result;
+    }
+    /** Perform inject, optionally sending a custom msg (refactored for re-use in the form inject button)*/
+    function doInject(node, customMsg) {
+        var label = node._def.label.call(node);
+        if (label.length > 30) {
+            label = label.substring(0, 50) + "...";
+        }
+        label = label.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;");
+        $.ajax({
+            url: "inject/" + node.id,
+            type: "POST",
+            data: customMsg,
+            success: function (resp) {
+                RED.notify(node._("inject.success", { label: label }), { type: "success", id: "inject", timeout: 2000 });
+            },
+            error: function (jqXHR, textStatus, errorThrown) {
+                if (jqXHR.status == 404) {
+                    RED.notify(node._("common.notification.error", { message: node._("common.notification.errors.not-deployed") }), "error");
+                } else if (jqXHR.status == 500) {
+                    RED.notify(node._("common.notification.error", { message: node._("inject.errors.failed") }), "error");
+                } else if (jqXHR.status == 0) {
+                    RED.notify(node._("common.notification.error", { message: node._("common.notification.errors.no-response") }), "error");
+                } else {
+                    RED.notify(node._("common.notification.error", { message: node._("common.notification.errors.unexpected", { status: jqXHR.status, message: textStatus }) }), "error");
+                }
+            }
+        });
+    }
     RED.nodes.registerType('inject',{  
         category: 'common',
         color:"#a6bbcf",
@@ -283,14 +338,15 @@
             return this.name?"node_label_italic":"";
         },
         oneditprepare: function() {
-            if (this.payloadType == null) {
-                if (this.payload == "") {
-                    this.payloadType = "date";
+            var node = this;
+            if (node.payloadType == null) {
+                if (node.payload == "") {
+                    node.payloadType = "date";
                 } else {
-                    this.payloadType = "str";
+                    node.payloadType = "str";
                 }
-            } else if (this.payloadType === 'string' || this.payloadType === 'none') {
-                this.payloadType = "str";
+            } else if (node.payloadType === 'string' || node.payloadType === 'none') {
+                node.payloadType = "str";
             }
 
             $("#inject-time-type-select").on("change", function() {
@@ -345,17 +401,17 @@
             });
 
             var repeattype = "none";
-            if (this.repeat != "" && this.repeat != 0) {
+            if (node.repeat != "" && node.repeat != 0) {
                 repeattype = "interval";
                 var r = "s";
-                var c = this.repeat;
-                if (this.repeat % 60 === 0) { r = "m"; c = c/60; }
-                if (this.repeat % 1440 === 0) { r = "h"; c = c/60; }
+                var c = node.repeat;
+                if (node.repeat % 60 === 0) { r = "m"; c = c/60; }
+                if (node.repeat % 1440 === 0) { r = "h"; c = c/60; }
                 $("#inject-time-interval-count").val(c);
                 $("#inject-time-interval-units").val(r);
                 $("#inject-time-interval-days").prop("disabled","disabled");
-            } else if (this.crontab) {
-                var cronparts = this.crontab.split(" ");
+            } else if (node.crontab) {
+                var cronparts = node.crontab.split(" ");
                 var days = cronparts[4];
                 if (!isNaN(cronparts[0]) && !isNaN(cronparts[1])) {
                     repeattype = "time";
@@ -431,7 +487,24 @@
 
             /* */
 
-            $('#node-input-property-container').css('min-height','120px').css('min-width','450px').editableList({
+            var eList = $('#node-input-property-container').css('min-height','120px').css('min-width','450px');
+
+            eList.editableList({
+                buttons: [
+                    {
+                        id: "node-inject-test-inject-button",
+                        label: node._("inject.injectNow"),
+                        click: function(e) {
+                            var items = eList.editableList('items');
+                            var result = getProps(items);
+                            var m = {__user_inject_props__: []};
+                            if (result && result.props && result.props.length) {
+                                m.__user_inject_props__ = result.props;
+                            }
+                            doInject(node, m);
+                        }
+                    }
+                ],
                 addItem: function(container,i,opt) {
                     var prop = opt;
                     if (!prop.hasOwnProperty('p')) {
@@ -465,33 +538,38 @@
                 removable: true,
                 sortable: true
             });
+            $('#node-inject-test-inject-button').css("float", "right").css("margin-right", "unset");
 
-            if (!this.props) {
+            if (RED.nodes.subflow(node.z)) {
+                $('#node-inject-test-inject-button').attr("disabled",true);
+            }
+
+            if (!node.props) {
                 var payload = {
                     p:'payload',
-                    v: this.payload ? this.payload : '',
-                    vt:this.payloadType ? this.payloadType : 'date'
+                    v: node.payload ? node.payload : '',
+                    vt:node.payloadType ? node.payloadType : 'date'
                 };
                 var topic = {
                     p:'topic',
-                    v: this.topic ? this.topic : '',
+                    v: node.topic ? node.topic : '',
                     vt:'string'
                 }
-                this.props = [payload,topic];
+                node.props = [payload,topic];
             }
 
-            for (var i=0; i<this.props.length; i++) {
-                var prop = this.props[i];
+            for (var i=0; i<node.props.length; i++) {
+                var prop = node.props[i];
                 var newProp = { p: prop.p, v: prop.v, vt: prop.vt };
                 if (newProp.v === undefined) {
                     if (prop.p === 'payload') {
-                        newProp.v = this.payload ? this.payload : '';
-                        newProp.vt = this.payloadType ? this.payloadType : 'date';
+                        newProp.v = node.payload ? node.payload : '';
+                        newProp.vt = node.payloadType ? node.payloadType : 'date';
                     } else if (prop.p === 'topic' && prop.vt === "str") {
-                        newProp.v =  this.topic ? this.topic : '';
+                        newProp.v =  node.topic ? node.topic : '';
                     }
                 }
-                $("#node-input-property-container").editableList('addItem',newProp);
+                eList.editableList('addItem',newProp);
             }
 
             $("#inject-time-type-select").trigger("change");
@@ -589,67 +667,26 @@
             $("#node-input-repeat").val(repeat);
             $("#node-input-crontab").val(crontab);
 
-            /* Gather the injected properties of the msg object */
-            var props = $("#node-input-property-container").editableList('items');
-            var node = this;
-            node.props= [];
-            delete node.payloadType;
-            delete node.payload;
-            node.topic = "";
-            props.each(function(i) {
-                var prop = $(this);
-                var p = {
-                    p:prop.find(".node-input-prop-property-name").typedInput('value')
-                };
-                if (p.p) {
-                    p.v = prop.find(".node-input-prop-property-value").typedInput('value');
-                    p.vt = prop.find(".node-input-prop-property-value").typedInput('type');
-                    if (p.p === "payload") { // save payload to old "legacy" property
-                        node.payloadType = p.vt;
-                        node.payload = p.v;
-                        delete p.v;
-                        delete p.vt;
-                    } else if (p.p === "topic" && p.vt === "str") {
-                        node.topic = p.v;
-                        delete p.v;
-                    }
-                    node.props.push(p);
-                }
-            });
+            /* Gather the properties */
+            var items = $("#node-input-property-container").editableList('items');
+            delete this.payloadType;
+            delete this.payload;
+            this.topic = "";
+            var result = getProps(items, true);
+            this.props = result.props;
+            if(result.payloadType) { this.payloadType = result.payloadType; };
+            if(result.payload) { this.payload = result.payload; };
+            if(result.topic) { this.topic = result.topic; };
         },
         button: {
             enabled: function() {
                 return !this.changed
             },
-            onclick: function() {
+            onclick: function () {
                 if (this.changed) {
-                    return RED.notify(RED._("notification.warning", {message:RED._("notification.warnings.undeployedChanges")}),"warning");
+                    return RED.notify(RED._("notification.warning", { message: RED._("notification.warnings.undeployedChanges") }), "warning");
                 }
-
-                var label = this._def.label.call(this);
-                if (label.length > 30) {
-                    label = label.substring(0,50)+"...";
-                }
-                label = label.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;");
-                var node = this;
-                $.ajax({
-                    url: "inject/"+this.id,
-                    type:"POST",
-                    success: function(resp) {
-                        RED.notify(node._("inject.success",{label:label}),{type:"success",id:"inject", timeout: 2000});
-                    },
-                    error: function(jqXHR,textStatus,errorThrown) {
-                        if (jqXHR.status == 404) {
-                            RED.notify(node._("common.notification.error",{message:node._("common.notification.errors.not-deployed")}),"error");
-                        } else if (jqXHR.status == 500) {
-                            RED.notify(node._("common.notification.error",{message:node._("inject.errors.failed")}),"error");
-                        } else if (jqXHR.status == 0) {
-                            RED.notify(node._("common.notification.error",{message:node._("common.notification.errors.no-response")}),"error");
-                        } else {
-                            RED.notify(node._("common.notification.error",{message:node._("common.notification.errors.unexpected",{status:jqXHR.status,message:textStatus})}),"error");
-                        }
-                    }
-                });
+                doInject(this);
             }
         },
         oneditresize: resizeDialog
diff --git a/packages/node_modules/@node-red/nodes/core/common/20-inject.js b/packages/node_modules/@node-red/nodes/core/common/20-inject.js
index 772e238a3..26be74bfa 100644
--- a/packages/node_modules/@node-red/nodes/core/common/20-inject.js
+++ b/packages/node_modules/@node-red/nodes/core/common/20-inject.js
@@ -100,8 +100,12 @@ module.exports = function(RED) {
 
         this.on("input", function(msg, send, done) {
             var errors = [];
-
-            this.props.forEach(p => {
+            var props = this.props;
+            if(msg.__user_inject_props__ && Array.isArray(msg.__user_inject_props__)) {
+                props = msg.__user_inject_props__;
+            }
+            delete msg.__user_inject_props__;
+            props.forEach(p => {
                 var property = p.p;
                 var value = p.v ? p.v : '';
                 var valueType = p.vt ? p.vt : 'str';
@@ -156,7 +160,11 @@ module.exports = function(RED) {
         var node = RED.nodes.getNode(req.params.id);
         if (node != null) {
             try {
-                node.receive();
+                if (req.body && req.body.__user_inject_props__) {
+                    node.receive(req.body);
+                } else {
+                    node.receive();
+                }
                 res.sendStatus(200);
             } catch(err) {
                 res.sendStatus(500);
diff --git a/packages/node_modules/@node-red/nodes/locales/en-US/messages.json b/packages/node_modules/@node-red/nodes/locales/en-US/messages.json
index 6945ee8ae..e5108710b 100755
--- a/packages/node_modules/@node-red/nodes/locales/en-US/messages.json
+++ b/packages/node_modules/@node-red/nodes/locales/en-US/messages.json
@@ -32,6 +32,7 @@
     },
     "inject": {
         "inject": "inject",
+        "injectNow": "inject now",
         "repeat": "repeat = __repeat__",
         "crontab": "crontab = __crontab__",
         "stopped": "stopped",
diff --git a/test/nodes/core/common/20-inject_spec.js b/test/nodes/core/common/20-inject_spec.js
index ff5eb7f73..f760bb646 100644
--- a/test/nodes/core/common/20-inject_spec.js
+++ b/test/nodes/core/common/20-inject_spec.js
@@ -510,6 +510,36 @@ describe('inject node', function() {
         });
     });
 
+    
+    it('should inject custom properties in message', function (done) {
+        //n1: inject node with  { topic:"static", payload:"static", bool1:true, str1:"1" }
+        var flow = [{id: "n1", type: "inject", props: [{p:"payload", v:"static", vt:"str"}, {p:"topic", v:"static", vt:"str"}, {p:"bool1", v:"true", vt:"bool"}, {p:"str1", v:"1", vt:"str"}], wires: [["n2"]], z: "flow"},
+                    {id: "n2", type: "helper"}];
+        helper.load(injectNode, flow, function () {
+            var n1 = helper.getNode("n1");
+            var n2 = helper.getNode("n2");
+            n2.on("input", function (msg) {
+                try {
+                    msg.should.not.have.property("payload"); //payload removed
+                    msg.should.have.property("topic", "t_override"); //changed value to t_override
+                    msg.should.have.property("str1", 1);//changed type from str to num
+                    msg.should.have.property("num1", 1);//new prop
+                    msg.should.have.property("bool1", false);//changed value to false
+                    done();
+                } catch (err) {
+                    done(err);
+                }
+            });
+            n1.receive({ __user_inject_props__: [
+                {p:"topic", v:"t_override", vt:"str"}, //change value to t_override
+                {p:"str1", v:"1", vt:"num"}, //change type
+                {p:"num1", v:"1", vt:"num"}, //new prop
+                {p:"bool1", v:"false", vt:"bool"}, //change value to false
+            ]});
+        });
+    });
+
+
     it('should inject multiple properties using legacy props if needed', function (done) {
         var flow = [{id: "n1", type: "inject", payload:"123", payloadType:"num", topic:"foo", props: [{p:"topic", vt:"str"}, {p:"payload"}], wires: [["n2"]], z: "flow"},
                     {id: "n2", type: "helper"}];
@@ -592,6 +622,46 @@ describe('inject node', function() {
                          });
         });
 
+        it('should inject custom properties in posted message', function(done) {
+            var flow = [{id:"n1", type:"inject", payloadType:"str", topic: "t4",payload:"hello", wires:[["n4"]] },
+                        { id:"n4", type:"helper"}];
+            helper.load(injectNode, flow, function() {
+                var n4 = helper.getNode("n4");
+                n4.on("input", function(msg) {
+                    msg.should.not.have.property("payload"); //payload removed
+                    msg.should.have.property("topic", "t_override"); //changed value to t_override
+                    msg.should.have.property("str1", "1"); //injected prop
+                    msg.should.have.property("num1", 1); //injected prop
+                    msg.should.have.property("bool1", true); //injected prop
+
+                    helper.clearFlows().then(function() {
+                        done();
+                    });
+                });
+                try {
+                    helper.request()
+                    .post('/inject/n1')
+                    .send({ __user_inject_props__: [
+                        {p:"topic", v:"t_override", vt:"str"}, //change value to t_override
+                        {p:"str1", v:"1", vt:"str"}, //new prop
+                        {p:"num1", v:"1", vt:"num"}, //new prop
+                        {p:"bool1", v:"true", vt:"bool"}, //new prop
+                    ]})
+                    .expect(200).end(function(err) {
+                        if (err) {
+                            console.log(err);
+                            return helper.clearFlows()
+                            .then(function () {
+                                done(err);
+                            });
+                        }
+                    });
+                } catch(err) {
+                    done(err);
+                }
+            });
+        });
+
         it('should fail for invalid node', function(done) {
             helper.request().post('/inject/invalid').expect(404).end(done);
         });