How do I make the output to be only the multiples of 10 using 'intlinprog' ?

So I'm using 'intlinprog' to find the optimal value for 20 variables, including lb, ub, ueq and eq.

'intcon' has been set for variable x#17 ~#20 since those four must be integer.

My question is, if I want variable x#20 to be only in a multiple of 10, when the range is 0~50, i.e. x #20 = [0, 10, 20, 30, 40, 50], how should I add a new constraint to satisfy my needs?

Answer 1

[Walter Roberson]

in your formula and constraints multiply x20 by 10 everywhere it is used, but constrain it to be integer 0 to 5

[Ha Lim LEE]

Thank you. It works. :)