[SOLVED]behaviour for freetext values

[adt]

In my Customerview the Location in connected to freetext1 and Category is connected to freetext2 .
Now when i open my CustomerView these values come prefillied because of the code in my file.

Is there any way so that if i select a Location, only the relevant Category are displayed in Dropdown box of category and not all.(Cascading Dropdown Behaviour)


Thanks in advance!