I have a decision variable PRODAMOUNT and it is of Int type. I need it as binary in some points of the model, like here in the objective function second PRODAMOUNT should be used as 1 when there is a positive value in it otherwise is should be 0 (as it is)

```
@objective(
premex,
Min,
sum((u["cap"] - PRODAMOUNT[op_k, u_k, t] * _PRODUCTs_ALL[op["product"]]["bagSize"]) * u["util_cost1"]
+ sum(t / _ORDERs_ALL[op["order"]]["details"]["deadline"] * PRODAMOUNT[op_k, u_k, t] * 10000
for (op_k, op) in _ORDER_PRODUCTs_ALL, (u_k, u) in UNITS, t in TIME)
)
```