Plus42 Equations, Preview Release

[Werner]

How do you 'call' another equation (with arguments)?
I'm not at all familiar with how equations work, so I must be doing something wrong.

Take the following formula:

Code:

USFV:IF(i=0:N:EXPM1(N*LNP1(i))/i)

I try CALC with i=0.05 and N=10 and get 12.5779. Good.
I now want to use this in another equation (and I use just the call for now):

Code:

TVM:USFV(A:B)

But that doesn't work? with A=0.05 and B=10, I get 10.0225.

Help!
Werner