Problem in returned value of custom criteria on tester

Hello

 I have a problem with the values returned on tester when I use the genetic algorithm to optimize. Using the same parameter in EA, the return value of the function OnTester() dont match when I compare the test individually  with the return value in optimization.

Here is the Step by step:

1-First I made a custom criteria to run the optimization:

double OnTester()
{
double parameter=-(1-P)*(0.3*RMSET+0.7*RMSE+nmedio);//-0.5*(1-ninput/ntinput));
if(parameter<-1) parameter=-1;
return(parameter);
}

 when P, RMSET, RMSE and nmedio are global variables.

2- I ran the optimization with genetic algorithm and show theses results: 

3-I select the first result and select input parameter to run the test individually and I obtein the following result:

When we compare the individual result with the declarad result of optimization, we see which the results are diverging.

I dont change anything about the two tests. The time period is the same and paramters too, but the results are diferent. I did the calculation manually and, the right result, is the result from a test that ran individually.

What could be happen here?

 Thanks