[Koha] problem in OPAC search

Dear Alll In koha database, using xampp, items table, in field homebranch, which had varchar (4), I made it to varchar(5) , , Then I changed the data in homebranch field, For example it was ABCD and now it is ABCDE but in the search in OPAC, advanced search., If I find by ABCDE, it does not find any thing It says, no results found items.homebranch=ABCDE in the backend, it shows all the data with ABCDE in homebranch field in items table. Also I changed branch code in branch table from ABCD to ABCDE Where should be the problem Thanks and Regards Manoj