Originally posted by: noneless

Hello all

How can I return interval variable values which calculated in main block in cp. I mean something like cplex.setObjCoef function in cplex.

Hi,

you may use setCoef on a constraint where you define the objective:

using CP;

dvar int x in 0..10;
dvar int obj;

minimize obj;
subject to
{
ctObj:-obj+x==0;
x==1;
}

execute
{
writeln(obj);
}

main
{
thisOplModel.generate();
cp.solve();
thisOplModel.postProcess();

thisOplModel.ctObj.setCoef(thisOplModel.x,2);

cp.solve();
thisOplModel.postProcess();

}

which gives

1
2

regards

Originally posted by: noneless

Thanks AlexFleischer

I did what you said.Now I have faced a new problem.I get a "You can not change the coefficient of an aggregate expression"  error. how can I avoid this error and change the coefficients?

Hi,

in setCoef documentation you may read

Changes the coefficient of a decision variable in the invoking constraint. This method is limited to constraints that use simple real linear expressions with no aggregation.

regards