Hi All,

I've an excel workbook from a colleague which contains lots of sheets and got a problem. Sheets about these problem are A, B and C. I've formula at T12 cell of C Sheet like

=-'A'!T12+'B'!T12

and formula turns 0.

T12 cells in A and B sheets have data and the format is number for all sheets.

Any help would be greatly appreciated.

Thank you.