I’m trying to add one constraint :sum of “t[i,j]x[i,j]<=10". T is one "1111” metrix and x[1:11,1:11] are binary variables.Seems to be error.[12]

Please post an MWE and clarify what your problem is. The constraint is correct. At least this code works on my machine: using JuMP, CPLEX S = 1:11 A = rand(11,11) model = JuMP.direct_model( CPLEX.Optimizer() ) @variable(model, x[i in S, j in S], Bin) @objective(model, Max, sum(A[i,j] * x[i,j] for i…