UPDATE PartialUpdate AS image
SET image ASSIGN < [40:45,40:45] 
 24ul, 24ul, 24ul, 24ul, 24ul, 24ul;
 24ul, 24ul, 24ul, 24ul, 24ul, 24ul;
 24ul, 24ul, 24ul, 24ul, 24ul, 24ul;
 24ul, 24ul, 24ul, 24ul, 24ul, 24ul;
 24ul, 24ul, 24ul, 24ul, 24ul, 24ul;
 24ul, 24ul, 24ul, 24ul, 24ul, 24ul
 >