MAX - Array Formula

[lucraft]

I cannot get the formula from the below thread to work:

http://www.excelforum.com/excel-gene...variables.html

Here's what I have used;

=MAX(IF(('Cab Level'!$C$3:$C$5152=$D3)*('Cab Level'!$H$3:$H$5152=$A3),'Cab Level'!$M$3:$M$5152))

Confirmed with CTRL+SHIFT+ENTER.

It returns blank cells, with no errors?

Any ideas??

Thanks in advance.