I've already given you my advice: I previously suggested that you carefully examine how the DynamicMenus example app that Roland Smith has developed (and graciously provides for free) works. If you had taken a little time and effort to do this instead of summarily rejecting my suggestion, you may have learned one technique for accomplishing this. Rene's response provides the key point: You must create a user object that is inherited from the PB menu object and add properties and methods that will either call a window function or use TriggerEvent PowerScript function to fire an event in the parent window.

We do something similar where I work inside of our commercial application, but instead of calling a window function while using the "Dynamic" keyword to prevent compiler errors and to fail gracefully at runtime if the function does not exist, we elected to use an instance string variable in the dynamic menu object to hold an event name, then use TriggerEvent(is_event_name) in the parent window (which also fails gracefully if the event does not exist) to fire a user event in the window. While I'm unable to supply you with the proprietary code that implements this particular method, I mention it to illustrate that there exists alternative solutions to accomplishing this issue... but first, you have to open to learning those alternatives.

Good luck and best wishes!