I can create a signal payload with the BPMN Model API

As a developer of a process,

Given:

• I create a process x with a throwing signal event, and
• I create another process y with a catching signal event.
• In addition, I define a payload for the throwing signal event in x.
• The processes are deployed to the process engine.

When:

• I start a process instance of x and y.
• The process instance of y is waiting in the catching signal event.
• The process instance of x throws the signal event.

Then:

• The in process x defined payload is delivered to the catching signal event.

So that:

• The payload is availabe in the process instance of y.