in the column bindings, you have set the cat ID value to update using the value from the form, you should not bind the catID primary key column to anything, the database will not allow the primary column value to be changed.
if it is still not working, clear the redirect value in the update record behavior, then add the following code just after the ,body> tag:
SQL: <php echo($WA_Sql); ?><br />
this will write the update SQL Statement to the page for troubleshooting.