Formatting Y-axis Range

[bbtresoo]

HI guys I'm facing a problem trying to format y axis range.

when I set it manually as follow : maximum = 262/minimum=73/major interval =17  I don't see any change when I run it but when I check  logarithmic scale box just for testing purpose I see a change   I really don't unterstand what's going on. By the way my cognos version is 10.2.2  may be it's an ongoing global issue  please any kind of help will be very appreciated .

Thx guys