[Closed] Problem extending DirectX material

Hi guys,
I’m trying to create a custom DirectX material by extending “DirectX_9_Shader” class and replacing its UI. The extended material should load my .fx file upon creation, but I cannot make it work.

In the following example I try to load one of the standard .fx files shipped with 3ds Max, but as soon as the material is created I get the error: “>> MAXScript Scripted Plugin Handler Exception: – Type error: Call needs function or class, got: undefined <<” and the “delegate.effectFile” line is highlighted.

I’ve found this article on Gamasutra showing code almost identical to mine too, but I got no luck. What am I doing wrong?

plugin Material Custom
name:"DirectX Custom Shader"
classID:#(0x5345a218, 0x71525337)
extends:DirectX_9_Shader replaceUI:true version:1
(
    parameters main rollout:params
    (
        cDiffuse type:#color default:blue ui:cpDiffuseColor

        on cDiffuse set val do delegate.baseColor = val
    )

    rollout params "Parameters"
    (
        colorPicker cpDiffuseColor "Diffuse Color: " align:#center
    )

    on create do
    (
        -- setup initial material
        -- try to load one of the default shaders
        delegate.effectFile (getDir #MaxRoot + "maps\fx\HammerTime.fx")
    )
)

Thank you for any help

• Enrico