Thanks Mike,

good tip!! I changed it and it seems to work now.

The problem is fairly complex. I have a table where I can add records. These records have several parts. Each record consists of ID, Date, Train Number and many more. I have a form where I can add records. This form has two pages. One for adding records ( this part works fine ) and then I have another form where I can search records by filtering. The filtering happens by using an options group with different options button. I added a button...