Problem with swModView.GetViewHWnd Form show

Hello,

I wrote a VbNetAddin to get some properties of WizardHole in a edit sketch, it works with the event "PartDoc_FeatureSketchEditPreNotify."

When I edits a sketch of a HoleWizard feature, the form should show with the properties called.

The Form should show up and be a child of swModView (no Sldwrkd.Frame  child), but it will not show, even though I do not see errors in Debug.

I would like to open it in the lower right corner.

You can help me figure out where there is the error? I attach the source code.

Thanks to all

SolidworksApi macros