Thanks Vignesh,
I know this can be achieved by <%GET(CurrentBO,Internal name of the field in UI which you want to default in filter)%> but in this case, filter gets locked and user can not select any value other than default value
But the standard query I mentioned behaves differently. it does not use Get token + it gets the default value and user is able to select a diff value.
ALso have u tried using this GEt token in Value list . Does it work?
I tried for object ref field it works but when i tried for value list it does not work
Regards
Gurmeet