diff --git a/io/emoncms/88-emoncms.html b/io/emoncms/88-emoncms.html
index ff71828b..b179b7af 100644
--- a/io/emoncms/88-emoncms.html
+++ b/io/emoncms/88-emoncms.html
@@ -23,21 +23,22 @@
         <label for="node-input-topic"><i class="icon-tasks"></i> Topic</label>
         <input type="text" id="node-input-topic" placeholder="">
     </div>
+    <div class="form-row">
+        <label for="node-input-nodegroup"><i class="icon-tag"></i> Node Group</label>
+        <input type="text" id="node-input-nodegroup" placeholder="">
+    </div>
     <div class="form-row">
         <label for="node-input-name"><i class="icon-tag"></i> Name</label>
         <input type="text" id="node-input-name" placeholder="Emoncms">
     </div>
-    <div class="form-row">
-        <label for="node-input-nodegroup"><i class="icon-tag"></i> Node</label>
-        <input type="text" id="node-input-nodegroup" placeholder="">
-    </div>
-    <div class="form-tips">If Topic is left blank the output Topic is the same as the input Topic.</div>
+    <div class="form-tips">Topic is not mandatory, if Topic is left blank <b>msg.topic</b> will used. Topic overrides <b>msg.topic</b></br>
+		Node Group (numeric) is not mandatory, if Node Group is left blank <b>msg.nodegrpup</b> will used. Node Group overrides <b>msg.nodegroup</b></div>
 </script>
 
 <script type="text/x-red" data-help-name="emoncms">
 	<p>Performs post to Emoncms.</p>
-	<p>The Topic is not mandatory, if Topic is left blank <b>msg.topic</b> will used.</p>
-	<p>The Node is not mandatory, (numberic)</p>
+	<p>Topic is not mandatory, if Topic is left blank <b>msg.topic</b> will used. Topic overrides <b>msg.topic</b></p>
+	<p>Node Group (numeric) is not mandatory, if Node Group is left blank <b>msg.nodegrpup</b> will used. Node overrides <b>msg.nodegrpup</b></p>
 </script>
 
 <script type="text/javascript">
diff --git a/io/emoncms/88-emoncms.js b/io/emoncms/88-emoncms.js
index a40ee9a5..a007d3d5 100644
--- a/io/emoncms/88-emoncms.js
+++ b/io/emoncms/88-emoncms.js
@@ -40,9 +40,10 @@ function Emoncms(n) {
 	this.on("input", function(msg) {
 		
 		var topic = this.topic || msg.topic;
+		var nodegroup = this.nodegroup || msg.nodegroup;
 		this.url = this.baseurl + '/input/post.json?json={' + topic + ':' + msg.payload+'}&apikey='+this.apikey;
-		if(this.nodegroup != ""){
-			this.url += '&node='+this.nodegroup;
+		if(nodegroup != ""){
+			this.url += '&node='+nodegroup;
 		}
 		node.log("[emoncms] "+this.url);
 		http.get(this.url, function(res) {