Marco Does not Work on Navigation form (1 Viewer)

[Bandara]

I added marco [ASSET ID] Like "*" & [Forms]![MAR]![Combo255] & "*"
It works on Normal Form. But If i Open it on Navigation form it doesent work.
Navigation Main Form Name : Welcome

If any one can fix this?

 

[Ranman256]

it the form is not bound to a table, you cant filter.

 

[Bandara]

it the form is not bound to a table, you cant filter.

but it works on normal form. navigation form it doesent work