Connect the action start node to your the function / actuator that needs to be triggered when the action is called. In this case, we will connect it to an exec node to execute a command. Drag and drop an exec code and connect its threads similar to the following figure. Also, double click on the exec node and check mark the Append option to pass the msg.payload (the HTTP request body) to this node. This way, once we execute this Action from the cloud, our command will be executed on the device and its stdout results will be sent back to us.