Well, assuming you have PBP 2.60, and the number starts at the beginning of the array, you could do this ...
Code:
ARRAYREAD  MyArray,[HEX2 Value64(7),HEX2 Value64(6),HEX2 Value64(5),HEX2 Value64(4), _
                    HEX2 Value64(3),HEX2 Value64(2),HEX2 Value64(1),HEX2 Value64(0)]
You can add a SKIP n, if it starts later in the array.

HTH,