Is there a playable expert that can tell if it's possible

Hi.
Is there a playable expert that can tell if it’s possible to have animation track which clips, when they reach 100% blending activate a gameobject referenced in their inspector. (and deactivate below 100%)

I tried for 2 days without success.
I tried by inheriting the built in animation track or from scratch.

The thing is I want to keep some basics of the built in animation track like the ability to have an override track (i don’t really need root motion though).

Is it possible or I wasting my time?

Thanks for the help

To be or not to be, that is the question