UPDATE PartialOverlay1 AS image
SET image ASSIGN < [45:55,65:75] 
 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul;
 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul;
 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul;
 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul;
 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul;
 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul;
 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul;
 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul;
 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul;
 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul;
 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul, 1ul
 >