Change AirFrictionMult by Collide

[Thooto]

Hello, I didn't found my answer in other posts, so I put this question.

I'd like to know how we can do to, when it is collided, make an object have an higher AirFrictionMult.
For example, I create two boxes, I want one of them have, by colliding the second, a higher AirFrictionMult, so in the scriptbox of the other one, in OnCollide, what do I have to tip?

Thank you for your answers, and sorry for my bad english!

[Chronos]

{e.this.AirFrictionMult = PutYourNumberHere}

[Thooto]

Thank you!