How do I stop a sprite with Platform behavior in mid-air?

Trying to make my player stop in mid-air if a button is clicked.

* Disabling the Platform behavior doesn't do it.

* Setting gravity to 0 doesn't do it.

* Enabling Solid behavior doesn't do it.

* Setting his y to Self.Y in addition to all the other things doesn't do it.

I'm sure that these actions are triggered because if I toggle them to 'disabled' it behaves differently.

But the player keeps having the impulse that it had even with all these. It flies up if I was on the way up, or falls down slowly if I was on the way down.

How do I stop it completely?

I solved it by mistake somehow :)

I think I was taking it in and out of the state every frame.

Will try to post an example project next time I ask.

Thanks