QUESTION: Store color to AOV

[Kh]

Hi Master, how are you?

I have a simple pillar with a white material, and I've assigned a red material to a polygon selection.

https://imgur.com/a/xYKcY3y

I added a Store Color to AOV for the pillar material and another one for the red material. However, when I render, the pillar's AOV also includes the red section. I want to be able to change only the pillar color in After Effects.

Any idea how to fix this?