Make "Size" product variant disappear if a specific "Style" product variant is selected

Hi All, I hope someone can help out with this.

Make “Size” product variant disappear if a specific “Style” product variant is selected

What I’m trying to do is for a product variant to become unavailable if you choose the “Style” variant.

As you can see from the picture, when I choose Square Style I want the Size’s variant to become unavailable.

I can’t seem to leave the variant empty under products as seen from the screenshot below:

I can’t seem to figure this out, and I was hoping someone could help me out here.

I’m using the Brooklyn theme by the way.