Play animation by touching 3D model on android device

Hi guys, im a total newbie in unity and starting to get familiarized by the codes.

So what I am trying to do is when you touch the 3d model on android screen it will then start playing a specific animation that I’ve set.

I have used touchCount but the thing is it animates the model wherever I touch on the screen since it activates on every touch count not on the model.

Btw I’m working on AR usin vuforia.

Thanks in advance to your suggestions.

then you next step would be to familiarize yourself with the concept of raycasting: