Hi Barbara, you're right. At first cond. formating seemed to be the best choice for me, but it wasn't (because of two reasons).
Yes, as you said data entranca is still possible.
And I have to use radio buttons in "show mode", but they still exist in the "hide mode".
Your 1st example is nearly what I want. But in both situations (yes/no) there has to be a field (field 1 in yes, fields 2 and 3 in no). Is there a way to make one situation completely empty?
Thank you again. And sorry for my late post.