You should set the property <i>ObjectType</i> with the UID of your UDO object.
You can set it using the ScreenPainter form properties or by code into the FormCreationParams object.
Hope it helps
Trinidad.
Please reward points to this answer if your problem is solved.
It closes the aplicacion of SBO and you execute it again.
The error itself due to that you execute your application go, creates the Form , and after , error gives you.
The form is created but there is not visible.
I also Trying to create a Form from an object UDO.
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