How do I make an animation property add a value every time a button is pressed?

It's quite a confusing question, I know, and I probably haven't worded it properly.

Here's my scenario:

I am animating my Camera to move along the x-axis once a button is pressed. Currently, I need it to move about 20 units. However, once I press the button the Camera object only moves from x-position 0 to x-position 20. I need it so that if I press the button again it adds another 20 units to the x-position so the Camera would be about x-position 40, then x-position 60 etc.

Hopefully that's clear enough.

Any help is appreciated, thanks.

 

instead animation control wit code and translation

 

I understand how to change the position with code, but then how will I animate the object from position to position?

 

Possibly the coolest way to achieve this is with interpolation.

Just reading through a tutorial now, this may be of interest, regarding the interpolation Lerp function ...

https://www.loekvandenouweland.com/...ctor3.Lerp-to-animate-an-object-in-unity.html