[Closed] Scripted Material: On Update not available??

I’m trying to use the On Update event handler inside a Scripted Material, but on evaluation, it doesn’t seem to like it???

    Even in something as benign as this:

        plugin material testMTL
        	name:"Test0r"
        	classID:#(0x45aac0f5, 0x20559386)
        	extends:Standard replaceUI:true version:1
        (
        	parameters main rollout:params
        	(
        		Name  type:#string  default:"uber"
        	)
        	rollout Params "Uber-Material"
        	(
        		on update do
        		(
        		)
        	)
        )
        

  Anyone know if the update handler is just not available within a material?  It seems to work fine in other types of attribute block usage....
 
 
 edit:  the "on create" handler also appears to gag the evaluator, despite what the MaxScript documentation eludes too. :(  Any insight at all would be immensly appreciated!

Even more odd is that if I paste this example code given in the help under the Scripted Plug-in Clauses heading:

   plugin material MyMaterial
   name:"MyMaterial"
   classID:#(0x33fdd816, 0x2f94507)
   extends:Standard replaceUI:true 
   (
   	parameters hardwareShaders rollout:shaderRoll
   	(
   	)
    
   	rollout shaderRoll "Hardware Shaders" width:328 height:189
   	(
   		label l1 "AA"
   	)
   	on create do format "created: %
" this
   	on clone orig do format "cloned: % : % : % : %
" this orig
   	(this == orig) (delegate == orig.delegate)
   )
   a=mymaterial()
   b=copy a
   

I get the typical maxScript error

   -- Syntax error: at (, expected Plugin clause: 
   --  In line:     (t
   -- Syntax error: at ), expected <factor>
   --  In line: )