[Phoenix-D]

It displays the value AT ten.

As for the forumla..

iff %range% <=10 ,30,iff %range% <=40 , 20,iff %range% <=120,10,0

aside from the formating, that should work. The spaces have to be in the proper spot and you're missing ( and ) marks as well as the [ around %range%
iff([%range%] <= 10, 30, iff([%range%] <= 40, 20, iff( [%range%] <= 120, 10, 0))) should work.

EDIT:
>=121, 10000, 0
The >= is for the cut off point.
The 10000 is to change all damage to 0 past that point.
I have no idea why the last 0 is in there(?).

You set the range limit in the DAMAGE forumla, not the to hit formula. EDIT2: and that's what you did. Oops. Anyway, despite SJ's protest 10000 works fine in that role.

Even if the to-hit is -99999, a ship will still fire and waste supplies, and the "max range" strategy will use that to determine its range.

The second 0 is the ELSE part of the statement; its what the formula uses if the range isn't above 120.