Ventana software support forum

I have a problem to build an equation in my model to calculate that:
I have stock or quantity B fixed every year
i have A= different monthly amount to be withdrawn from B each month
So i need to calculate C the residual each month C=B-A (the equation should read the initial value of B every 12 months and start the calculation)
Regards
Amgad

How about using SAMPLE IF TRUE. Use that on your 'B' at the start of every 12 months, and use that in the equations.

Tony.

i don't know how about this problem.




[Edited on 8-6-2006 by kayarman]