how to replace density_ramp_RGB in ass file?

[nikopol.vfx]

I have a exported *.ass file with volume. I'mm export file from houdini and load to maya.

in this file i have user attribute:

htoa__user_data_float
{
 name /obj/SHOP_MuzzleFlashes/Arn_Muzzles_Intense_ASS_Export/Emission_Intensity
 attribute "Emission_Intensity"
 default 6
}

in node aiStandIn i create attribute mtoa_constant_Emission_Intensity. when i change it i see effect on render... attribute change emission_intensity in shader...

in ass file i see and standard attributes like htoa__ramp_rgb { name density_ramp_RGB }
how to use it like a user attribute? what name of attribute i should create in aiStandIn to connect to this attribute?

[Stephen.Blair]

You can't change parameters on objects inside a standin. Except for parameters that are also supported by the Arnold procedural node (a standin is an Arnold procedural node). Like opaque or visibility, or user data parameters on a procedural.

"density_ramp_RGB" is the name of a shader node. Why do you need to change that name?