UpdateText() Not Working

I'm trying to run the following SQL against my column, Testtbl.Task

I want to replace where the ampersand sign got HTML encoded to
"&", and I want to strip it down to only the ampersand sign and delete the "amp" and the ";", that's why my parameters for the UpdateText are 0 and 8 with no update text value.


It executes, but I still have the HTML encoding for the ampersand sign.


USE WI
GO
EXEC sp_dboption 'WI', 'select into/bulkcopy', 'true'
GO
DECLARE @ptrval binary(16)
SELECT @ptrval = TEXTPTR(Task)
FROM Testtbl
WHERE Task like '%amp;%'
UPDATETEXT Testtbl.Task @ptrval 0 8
GO
EXEC sp_dboption 'WI', 'select into/bulkcopy', 'false'
GO