Originally posted by: erinas

 {string} C=...;

 int T =...;

 range time= 0..T;

int D[K][T][C]

int TranspT [R][N][N]

s.t.

forall (n1,n2 in N, t in min (TranspT [r][n1][n2], 1) ..T)

sum ( n1 in N, r in R) X[r][t- TranspT [r][n1][n2]][k][o1][o2][n1][n2] == D[k][t][c];; (Constraint 1)

(this is not the whole model, just the constraint and the explanation of the expressions it contains)

Consider the code above, In (constraint 1) I want t to range between min (TranspT [r][n1][n2], 1) to T. Is it possible to use such an expression in the constraint indexes? I want the index to start by choosing between the minimum of two values: TranspT [r][n1][n2] or 1. I have here an issue in expressing the minumum of these two options: TranspT [r][n1][n2] or 1.

Cplex  keeps saying that I made syntax error. What could be a possible reason?

Thank you,

Originally posted by: erinas

I just found the answer in the forum. Minl worked. Thank you,