I want to use attributes from particles on objects that are instanced via a point SOP in an instance object.

For example, instanced cubes acquire the color of the particles they are instanced to.

Do I use the stamp expression for this, and where would I point it to? I tried something like

stamp(“/obj/particle_emitter1/OUT”,“Cd”,1)

in a point SOP of the geometry to be instanced, but no effect.