Changing parameters of one element on hover.

When hovering over one element, can I change the parameters of another element?

you could make it a component, and then style the hover state of the component?

Yes, using interaction variance. First, you have to turn it into a component. Then when editing that component, you can add an interaction variant such as hover. This will let you make edit / overrides to any element in the component. Let me know if that makes sense! There’s more details on this in the plasmic levels game as well