How do you make a sprite stretch it's arm out?

I kinow that you make the arm a seperate sprite and pin it the body but it,s the the actual stretching i want help whit. The arm shouldn't strtech all out at once. It should strtech little by little. I want a picture of an event sheet since i don't think i will understand just a text explonation.

You would have to make separate animations for the sprite pixel by pixel.

you could look at the width command...

https://db.tt/d249Qcum (beta r211)