controller.setDesignMode(designMode) on 2 or more forms

Hi, is it possible to set design mode to true on 2 or more forms simultaneously?

When I try to call controller.setDesignMode(true), I get a runtime exception. We need to set 2 or more forms to design mode, how can I do this? Thanks!

thats not possible you design 1 form at 1 time
Just like you do in the real developer.

All right, Johan. Thanks for making that clear.