vb.net - Updates with non-ASCII characters not found -

i using firebird database in application. using telerik controls use database. database has non-ascii characters "«dios de amor» video oficial hd"

when place same values runs correctly, if change value gives error row not found.

obj.value = obj.value db.savechanges() 

this works,

obj.value = "my value" db.savechanges() 

this gives , error row not found, happens when there non-ascii characters in obj otherwise work well.