Problem wit sp_execute SQL

I have to make a large number of updates (about 29k) so I generated teh update statements into a table and am trying to sue sp_executesql to run them. Here is my code:

Declare @.SQLState NVARCHAR(500)

Declare Code Cursor
for
select SQLState from updates
open Code
FETCH NEXT FROM Code
into @.SQLState
While @.@.fetch_Status = 0
Begin
Exec sp_executesql @.SQLState

FETCH NEXT FROM Code
END

CLOSE Code
DEALLOCATE Code

IT appears to run succesfully, but the updates never happen - I get the following results for each update line:

UPDATE REEmployeeEvent SET UpdatedByEmployeeID= '00013' Where UpdatedByEmployeeID='00279'

(1 row(s) affected)

(0 row(s) affected)

Any ideas what I am doing wrong?

BTW - If I run the statements manually, they do work.

Thanks for any help!is there any particular reason why you want to use such a non-standard method to execute a script?

Why not execute dump them to a file, and execute the file as a single batch? At least that way you could visually inspect the scripts for correctness.

What you are trying to do here seems risky at best.