register variable issue

[sshin23]

The following doesn't work

using ExaModels
relu3(x) = x > 0 ? x^3 : zero(x)
drelu3(x) = x > 0 ? 3*x^2 : zero(x)
ddrelu3(x) = x > 0 ? 6*x : zero(x)
@register_univariate(relu3, drelu3, ddrelu3)

#try to implement this example
N=10
c = ExaCore()
x = variable(c, N)
objective(c, relu3(x[i]) for i = 1:N)

But the following does

relu3(x::Float64) = x > 0 ? x^3 : zero(x)
drelu3(x::Float64) = x > 0 ? 3*x^2 : zero(x)
ddrelu3(x::Float64) = x > 0 ? 6*x : zero(x)

[sshin23]

Idk when, but it was resolved. Maybe in #225