How to register functions from an array in JuMP?

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related:

Slurping and splatting in JuMP

I need to define a function that takes a large number of arguments. I am trying to follow JuMP documentation: All arguments to user-defined functions are scalars, not vectors. To define a function which takes a large number of arguments, you may use the splatting syntax f(x…) = … So did this, but it does not work: m = JuMP.Model(solver=Ipopt.IpoptSolver()) f(x...) = x[1] + x[2] JuMP.register(m, :f, 2, f, autodiff=true) JuMP.@variable(m, x[i=1:2], start = 0.) JuMP.@NLobjective(m, :Min, f(x..…

Julia+JuMP: variable number of arguments to function