Little help Experts :))

I want a query to remove/add an item to all chars can anyone help?? pleas,:o

--Add item to all chars
1. Modify your stored procedure _ADD_ITEM_EXTERN. (charname16 = @charname > charname16 like @charname)
2. Execute the stored procedure with @charname='%'

--Remove item from all chars
1. exec _SEEK_N_DESTROY_ITEM 'ITEM_CODENAME128'