Setting opacity

Omniverse Synthetic Data Generation (SDG)
1

Hi,

I have a strange issue I have a hard time grasping regarding the following code:

mat_prim = rep.get.prims(
    path_pattern="/Replicator/Looks/OmniPBR",
    path_pattern_exclusion="/Replicator/Looks/OmniPBR/Shader")
with mat_prim:
    rep.modify.attribute(
        "enable_emission", True)
    rep.modify.attribute(
        "enable_opacity", True)

To modify the emission works fine but when I try to modify the opacity I get an error saying OmniGraph Error: Attribute 'inputs:enable_opacity' could not be found for prim at /Replicator/Looks/OmniPBR/Shader.

But inside the property tab in the editor for the OmniPBR Material I am able to change both the emission and opacity of the object with no problem. The emission is also changed according to what I write in the script. So there is an issue specific to enable_opacity that I do not have with enable_emission.

Am I doing something wrong or what is the cause for this problem?