forum.alglib.net

Hi,
I am new to Alglib.
I am trying to solve the following problem.
Given a data set (X,Y) - X and Y are vectors of size p
Given F(a1,..,an)[X] - read F a function of n parameters a1,...,n taking X as a parameter
I want to find a1,...,an under constraints, or order to minimize
Sum[(Y-F)^2]

I am not really sure how to write the objective function.
I have tried using minbleicoptimize for this problem but had little success in writing the objective function.
Regards,