Hello Everyone, This function will help others developers a lot also. I have created a collection, and now I want to add filter in the list as per line. Like if the name is already entered in the previous fields it will not be available for the selected field. Or previous field's name will be removed from the list. Like it happened in the price list report, When we enter a stock item name, it will not be available in the next field. Please help...... [#Menu:Gatewayoftally] Item:Coll List:Alter:Coll List [Report:Coll List] Form:Coll List [Form:Coll List] Part:Coll List Full Height: Yes [Part:Coll List] Line:Coll List Repeat: Coll List : Coll Aggr Break On: $$IsEmpty:#CollList Scroll: Vertical [Line:Coll List] Field:Coll List [Field:Coll List] Use: Name Field Table: Coll Aggr Show Table: Always Set as:$$Value [Collection: Coll Aggr] Title: "Coll list" List: "abc", "def", "ghi", "jkl", "mno", "pqr" Full Height: Yes Align: Right