How can you change the bounds used by a solver with each iteration?

I am using lsqnonlin to sovle a system of equations and my problem requires that I change the bounds I have restraining the solution with each iteration of the solver. I tried to define the bounds as global variables then recalculate the upper and lower bounds at the end of the function file that the sovler calls. This doesn't work as the bounds are recalculated at the end of each iteration but the solver just uses the original bounds it was given.

Answer 1

[Torsten]

Use "fmincon" instead of "lsqnonlin" and change the bounds in "nonlcon".