How to display a message box after window displays?

I’m using a Movable Model window type and in the Open event it does some calculations and I need to display a message box alerting the user to the results of those calculations. How can I make the message box show so it is on top of the parent Windows in windows.

This works fine in OSX but in Windows, the message box always shows behind the parent window.

Do you thing in a single timer Action event instead of Open. With a period of 500 millisecond it should work perfectly.

thanks Michel

Worked great!