setting the parameters to values when declaring them will initialize the optimization at those starting points. for instance

Code:

global p1 = 0.05 

will initialize p1 @ 0.05. If you know what the parameters should be you you could test the implementation by hard coding them.

Code:

global p1 := 0.05 

will constrain p1 to 0.05 in the optimization. Besides that I can't help anymore without more information on what you're trying to do and whether you're using an existing or custom batch file. cheers ./w