There will much more stuffs after this. If I can somehow assign elements of the symbolic solution in the file to variables, I can use vectors as inputs to them and things will be much easier for me.

If I can do the following:

Variable := Find(Pc1_ret, Pc2_ret, A22, A44, Q22, Q44)

Pc1_ret(Ape,Apr) = Variable[0

Pc2_ret(Ape,Apr) = Variable[2

Then, I can use vectors containing min/max tolerances (as shown in the file, +/-10%). Do them to all parameters and other set of equations and at the end I'll have a flow rate tolerance band.

Of course, I can make three more copies of the same file and perform this analysis separately, but how lame!

I hope my explanation makes sense.

Thanks,

Eric