Hi

I need some help constructing a macro.

I have a workbook with 12 sheets , A - L.

In each sheet , range A3 - N35 contains a series of numbers , with some
cells being blank.

I need a macro which will go through each sheet , reducing each number
it finds by 1.

Blank cells should be left blank. Where a cell becomes negative after
subtracting 1 from it , this should be made blank too.

Can someone help?

Grateful for any assistance.



Best Wishes