Originally posted by: heidizh

Suppose that I define A=[1,2,3,4,5,6,7,8,9] in a dat. file and I have the value of A in the objective.  I get B=[1,3,5,6,2,9,8,4,7] in the POST-PROCESS. How could I give the value of B to A in the main block  so that I can update the value of A in the objective? Or, does there exist any other methods to modify the dat elements?

Any help will be greatly appreciated.

Best regards,

Heidi

You may want to look at class IloCplex and its setObjCoef() member function which allows changing the objective function from within a scripting block.

In general, your question is OPL related and should therefore be asked on the OPL forum. There you will find the OPL experts who can probably answer your question better than I can.

Originally posted by: heidizh

Thank you, Daniel. It's very helpful, thank you.