Hello There is this column that is varbinary and i want to replace just one part of its content in mssql, for example: this is its content: '0x17CB8BC829' and i just want to change the C8 for FF I tried this: DECLARE @value1 VARBINARY; DECLARE @value2 VARBINARY; SET @value1 = C8 SET @value2 = FF update table set column=replace(column,@value1,@value2) It says Invalid column name @value1 Anyone knows a soultion?