Originally posted by: imanopl

Hello everybody, I have a probably very simple question, I have a 2 dim array  ybefore[i][i] and it is an integer variable. I have another variable y[j], how can I write sum(i in 1..Indice1,j in 1..indice2)ybefore[i][[j]=y[j] in constraint programming in OPL. I am trying  the following:

forall( i in 1..n ){
sum(j in 1..m) ybefore[ x[i] ][j]<= y[j];}  But it seems not working. 

P.S: x and y are variable.

Hi

using CP;

int n=2;
int m=3;

dvar int x[1..n] in 1..n;
dvar int y[1..m];
dvar int ybefore[1..n][1..m];

subject to
{

forall( i in 1..n ){
forall(j in 1..m) ybefore[ x[i] ][j]<= y[j];
}

}

works fine

Same for

using CP;

int n=2;
int m=3;

dvar int x[1..n] in 1..n;
dvar int y[1..m];
dvar int ybefore[1..n][1..m];

subject to
{

forall( i in 1..n ){
sum(j in 1..m) ybefore[ x[i] ][j]<= 10;
}

}

but with what you wrote j in y[j] is not defined

regards