Originally posted by: sandeepsinghchauhan

tuple A
{
  key int toy;
  key int boys;
  key int girls;
}  

{A}  Child = ...;

dvar float+ X[Child];

maximize sum(dv in child)X[dv];

This 'dv in child' will add 

but i want to sum over girls only not with toy and boys

Hi

what about

maximize sum(dv in Child: (dv.boys==0) && (dv.toy==0) )X[dv];

regards

Originally posted by: sandeepsinghchauhan

dexpr float Xtotal[p in toy] = sum(dv in Child: (dv.boy==0) && (dv.girl==0) )X[dv];

ERROR:

Variable indexer size not allowed for a generic array.

Hi,

toy is not a tuple set. So "p in toy" is wrong

Regards