IF,Else,End Statement

Hi all,


CASE gGPOTenderLine."Item Category" OF
gGPOTenderLine."Item Category" :: "FP SWJB":
BEGIN
Item_Category :='MY';
END;
gGPOTenderLine."Item Category":: 'FP SWSIN':
BEGIN
Item_Category := 'SG';
END;
END;

I want do something like this. but its end up with error.
Help me.