Filter data tablebox based on textbox data

Resender

Well I solved the problem that I had so I'm changing the post to share it rather then have the question here for all 'eternity'.

I had a form that needed some change, you had to be able to fill in a barcode and that had then to retrieve the location of the packet.
On the form was already a tablebox showing all valid locations, the idea is after a location is found to show all the records lining to this location.

Beneath is the solution,codLocation is a code 20 global variable, shown in a textbox called txtboxLocation.When a valid location is found or the OnAfterValidate() of the location textbox,
a function is called that executes the following:
IF codLocation <> '' THEN BEGIN
SETRANGE("Location Code",codLocation);
END ELSE BEGIN
SETRANGE("Location Code");
END;
CurrForm.UPDATE;

So this will set the range on the source table of the form to the found codLocation, if a valid one is found.
If codLocation is empty,either because none was found or because you emptied the Location textbox, all the records will be shown.