User Defined Objects and Permission

Hello to everyone,

I would like to set a permission of an UDO by setting the formular id of the user form. I entered the uid of the user form in the permission screen, but there is no permission check coming up e.g. when I navigate to the user form by a linked button.

Shall I enter another value in the formular id? Maybe the formtype of the user form? Or is some additional code necessary for checking the permisssions of UDO's?

Thanks in advance,

Andreas