I want to define a parameter so that the model will change if I set a different value for the parameter. The following is an example, while the real problem is much more complicated.

using JuMP

model = Model()

@variable(model, x1 >= 0)

@variable(model, x2 >= 0)

@constraint(model, a*x + y>= 1.33)

@constraint(model, x + y <= a )

I want to solve a bunch of problems for different values of a. I don’t like to declare a as fixed variable because it will treat this LP as NLP.

Thanks.