Lock parent form during dialog popup

Hello,

I am trying to force the user to respond to a popup dialog(RunBase) form when changing the the SalesPrice on the salesLine. 

I have set the dialog prompt to Popup using:

dialog.formBuildDesign().windowType(FormWindowType::PopUp);

This would keep the dialog on top, but the user can still disregard the popup or navigate away from the record

Is there a way to lock the parent form till the user respond to the popup?

Thanks for nay help.