Use process variables in DMN Output

Is it possible to use process variables in DMN Output parameters ?
For example, concatenate process variables to one of Output strings ?
It is possible to make in “end” Execution Listener, but it’s not so clear as in “template” in DMN Output string.

Yes, it’s possible. In this example I am creating a payload in the DMN output.
Example: “{"userName":"${userName}","password":"${password}"}”

It is important to note that when using this JSON in the http-connector payload, an input parameter must be created in javascript format like this: eval('' + payload.replace(/\\/g, "") + ' ')