UPDATE PartialUpdate AS image
SET image ASSIGN < [28:32,28:32] 
 7ul, 7ul, 7ul, 7ul, 7ul;
 7ul, 7ul, 7ul, 7ul, 7ul;
 7ul, 7ul, 7ul, 7ul, 7ul;
 7ul, 7ul, 7ul, 7ul, 7ul;
 7ul, 7ul, 7ul, 7ul, 7ul
 >