Http command to trigger arduino

I need some guidance on creating a simple button that sends an http request to my arduino webserver.
The arduino webserver is listening for commands such as:
http://myarduinoip/UP
http://myarduinoip/DOWN

When launching these command from a browser arduino is actioning the command just fine (triggering UP or DOWN).
Now I would like to create buttons in node-red to perform the same action.

Any advise?

"Node-RED Cookbook : Node-RED" https://cookbook.nodered.org#http-requests