Hello colleagues,

I have the code:

```
m = Model(with_optimizer(CPLEX.Optimizer,
CPX_PARAM_TILIM=1800,CPX_PARAM_SCRIND=0,CPX_PARAM_EPGAP=0.01))
@variables m begin
x[i in 1:5] >=3, Int
end
@objective(m,Min,sum(x[i]^2 for i=1:5))
@constraints m begin
co, 2*x[1] + 3x[2]+4x[3]-x[4]+x[5] >= 1
end
status=optimize!(m)``
But give a error message.
How can I solve a binary quadratic problem by using CPLEX? Anyone has an example to share with me?
```