Using Udon can you get an avatars skinned mesh renderer?

I have a project for a world with Udon and I wish to be able to make it so when a user presses a button it will apply their avatars skinned mesh renderer to the particle system.

So far I have been able to make it so Udon can apply a skinned mesh renderer to a particle system but now I need to find a way to make it so Udon can grab a user’s avatar skinned mesh renderer for it to be added to the particle system.
Would anyone know where to start in achieving this? I need to be able to add user’s avatars skinned
mesh renderers to the mesh renderer variable.

If you are able to point me in the right direction that would be amazing! Thank you!

You can’t get any components under the player’s hierarchy.