fix modelingtoolkitize dispatching

Author: ChrisRackauckas

src/systems/diffeqs/modelingtoolkitize.jl

@@ -14,17 +14,17 @@ function modelingtoolkitize(prob::DiffEqBase.ODEProblem)
         p = prob.p
     end
 
-    var(x, i) = Sym{FnType{Tuple{symtype(t)}, Real}}(nameof(Variable(:x, i)))
+    var(x, i) = Num(Sym{FnType{Tuple{symtype(t)}, Real}}(nameof(Variable(x, i))))
     vars = reshape([var(:x, i)(value(t)) for i in eachindex(prob.u0)],size(prob.u0))
     params = p isa DiffEqBase.NullParameters ? [] :
-             reshape([Variable(:α,i) for i in eachindex(p)],size(p))
+             reshape([Num(Sym{FnType{Tuple{},Real}}(nameof(Variable(:α, i))))() for i in eachindex(p)],size(p))
 
     @derivatives D'~t
 
     rhs = [D(var) for var in vars]
 
     if DiffEqBase.isinplace(prob)
-        lhs = similar(vars, Any)
+        lhs = similar(vars, Num)
         prob.f(lhs, vars, params, t)
     else
         lhs = prob.f(vars, params, t)