Connect custom attributes to webflow ecommerce products

Screenshot 2024-03-16 at 4.44.59 PM
I’m trying to connect this to a particular style that I’ve specified in the e-com cms. However I don’t see the plus icon that usually allows us to link it up

Is there are way around this?

I think custom code is the only way. For some reason the CMS attributes binding feature does not appear to work with ECom items.