Display standard form on Lookup

Hi,

we want to display a standard form on lookup click. We have a EDT with a FormHelp assigned. The Form does not have the Popup Property. When we click the Lookup Button the Form does not appear visually. We've recognized that the form gets initialized and is even responding to key events (because the close - method gets called when hitting the return key).

Does anyone have an idea how to get the form displayed?

Kind regards

Andi