diff --git a/CHANGELOG.md b/CHANGELOG.md
index aeddb38..ff4fc83 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+### 0.4.0
+* webservice-node: added checkbox for appending `msg.payload` to the URI of the webservice node
+
 ### 0.3.1
 * review readme
 * fixed image display from readme on flows.nodered.org
diff --git a/README.md b/README.md
index 9b06f04..18a4a69 100644
--- a/README.md
+++ b/README.md
@@ -78,6 +78,9 @@ The flow itself could be found here: http://flows.nodered.org/flow/0b3c81b336102
 The webservice node, added in version `0.1.0`, allows you to directly call webservice URI's through the already 
 established websocket connection.
 
+Beginning with version `0.4.0` you can choose to automaticly append the incoming `msg.payload` to the set URI. 
+This is handy to add dynamic content to the webservice call, for example `DownOn` or `DownOff`.
+
 As the `UpDownDigital` (etc.) virtual input has no state where the control-in node can listen to, I've switched it as 
 an example via the webservice-node. See a short video here: https://cloud.codm.de/nextcloud/index.php/s/IttSURIGl8OkUBf
 
diff --git a/loxone/loxone.html b/loxone/loxone.html
index b7aba63..8a50448 100644
--- a/loxone/loxone.html
+++ b/loxone/loxone.html
@@ -18,17 +18,17 @@
         if (node) {
             var url = './loxone-miniserver/struct?id=' + node.id;
 
-            if (node.credentials || node.changed){
+            if (node.credentials || node.changed) {
                 url = './loxone-miniserver/struct-changed' +
                     '?id=' + node.id +
                     '&host=' + encodeURIComponent(node.host) +
                     '&port=' + encodeURIComponent(node.port);
 
-                if (node.credentials){
-                    if (node.credentials.username){
+                if (node.credentials) {
+                    if (node.credentials.username) {
                         url += '&username=' + encodeURIComponent(node.credentials.username);
                     }
-                    if (node.credentials.password){
+                    if (node.credentials.password) {
                         url += '&password=' + encodeURIComponent(node.credentials.password);
                     }
                 }
@@ -200,6 +200,8 @@
         </a>.
     </p>
 
+
+
 </script>
 
 <script type="text/x-red" data-template-name="loxone-control-in">
@@ -258,6 +260,8 @@
     </div>
 
 
+
+
 </script>
 
 <script type="text/javascript">
@@ -332,6 +336,8 @@
         Control as described in the Structure File Documentation.
     </p>
 
+
+
 </script>
 
 
@@ -381,6 +387,8 @@
         <span id="return-msg"></span>
     </div>
 
+
+
 </script>
 
 <script type="text/javascript">
@@ -443,7 +451,6 @@
 </script>
 
 
-
 <script type="text/x-red" data-help-name="loxone-miniserver">
     <p>
         Configure the Miniserver to connect to, the default port is 80. The credentials will be hashed with a key given by the Miniserver.<br>
@@ -461,6 +468,8 @@
         For further details, see the API-documentation.
     </p>
 
+
+
 </script>
 
 
@@ -494,6 +503,8 @@
         </label>
     </div>
 
+
+
 </script>
 
 <script type="text/javascript">
@@ -518,7 +529,6 @@
 </script>
 
 
-
 <script type="text/x-red" data-help-name="loxone-webservice">
     <p>
         This is used to get a return from a webservice call through the existing
@@ -528,7 +538,10 @@
         See the <a href="https://www.loxone.com/enen/kb/web-services/" target="_blank">Webservice documenation</a><br>
         The configured Websocket-Connection is used for communication.<br>
         <br>
-        <code>msg.uri</code> from the incoming message object overwrites the set uri.
+        <code>msg.uri</code> from the incoming message object overwrites the set uri. <br>
+        <br>
+        You can choose if <code>msg.payload</code> should be appended to the URI call. This works for the set URIs
+        and for URIs from <code>msg.uri</code>.<br>
         <br>
         The return will hold the answer from the requested datapoint (URI):<br>
         <pre>{
@@ -541,6 +554,8 @@
         <b>Currently no AES command encryption for Webservice-Calls</b>
     </p>
 
+
+
 </script>
 
 
@@ -562,6 +577,13 @@
         <input type="text" id="node-input-uri" placeholder="jdev/cfg/version">
     </div>
 
+    <div class="form-row" id="node-appendpayload">
+        <label>&nbsp;</label>
+        <input type="checkbox" id="node-input-appendpayload" style="display: inline-block; width: auto; vertical-align: top;">
+        <label for="node-input-appendpayload" style="width: 70%;">Append <code>msg.payload</code>?</label>
+    </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="Name">
@@ -569,13 +591,19 @@
 
     <div class="form-tips">
         The URI has to start with <code>jdev/</code> as <code>dev/</code> is deprecated!<br>
-        Simply add use 'jdev' instead of 'dev' according to the documenation.
+        Simply add use 'jdev' instead of 'dev' according to the documenation.<br>
+        <br>
+        Checking the 'append payload' checkbox will append <code>msg.payload</code> to the set URI
+        either if it is set in the node or supplied via <code>msg.uri</code>.<br>
+        (<code>jdev/sps/foo/{msg.payload}</code>)
     </div>
 
     <div class="form-row">
         <span id="return-msg"></span>
     </div>
 
+
+
 </script>
 
 <script type="text/javascript">
@@ -586,7 +614,8 @@
         defaults: {
             name: {value: ''},
             miniserver: {type: 'loxone-miniserver', required: true},
-            uri: {value: ''}
+            uri: {value: ''},
+            appendpayload: {value: false}
         },
         inputs: 1,
         outputs: 1,
@@ -599,13 +628,14 @@
 </script>
 
 
-
 <script type="text/x-red" data-help-name="loxone-online">
     <p>
         This node simply outputs <code>true</code> or <code>false</code> in
         <code>msg.payload</code> when the miniserver comes online or goes offline.
     </p>
 
+
+
 </script>
 
 
@@ -628,6 +658,8 @@
         <span id="return-msg"></span>
     </div>
 
+
+
 </script>
 
 <script type="text/javascript">
@@ -660,6 +692,8 @@
         webservice documentation</a>.
     </p>
 
+
+
 </script>
 
 <script type="text/x-red" data-template-name="loxone-keepalive">
@@ -681,6 +715,8 @@
         <span id="return-msg"></span>
     </div>
 
+
+
 </script>
 
 <script type="text/javascript">
diff --git a/loxone/loxone.js b/loxone/loxone.js
index 643d853..096b068 100644
--- a/loxone/loxone.js
+++ b/loxone/loxone.js
@@ -523,12 +523,13 @@ module.exports = function (RED) {
                 return null;
             }
 
-            node.uri = wantedURI;
-            //node.log('sending ' + wantedURI);
+            node.uri = wantedURI + ((config.appendpayload === true) ? msg.payload : '');
+
+            //node.log('sending ' + node.uri);
 
             //add node to the queue for waiting messages and send the URI
             node.miniserver.registerWebserviceNode(node);
-            node.miniserver.connection.connection.send(wantedURI);
+            node.miniserver.connection.connection.send(node.uri);
 
         });
 
diff --git a/node-red-contrib-loxone-webservice.png b/node-red-contrib-loxone-webservice.png
index 6a80187..6e82916 100644
Binary files a/node-red-contrib-loxone-webservice.png and b/node-red-contrib-loxone-webservice.png differ
diff --git a/package.json b/package.json
index 8939868..f4e4657 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "node-red-contrib-loxone",
-  "version": "0.3.1",
+  "version": "0.4.0",
   "description": "Connecting the Loxone Miniserver to node-red via Websocket API",
   "license": "MIT",
   "keywords": [