Add driver to f-curve

Its a really painful experience when it comes to fixing the drivers after applying the scale of a rig thats meant to be compatible with unreal engine cause of how the animations come out in different size than the rig itself.

But sometimes we forget to apply the scale right before adding all the necessary controllers that help us manipulate our rigs nice and easy.

So why not be able to add a driver to the F-Curves so that we can sync everything with the unit scale. This can save us a HUGE amount of time fixing the broken drivers.

I am really surprised this hasn't became a feature still after all these years.

Here is the easiest way I managed to think of which can fix the drivers without adjusting the f-curves manually. Select a driver, change it to Scripted Expression and give it a var/100 and done, the driver now works properly again.

all this looks like fun and games until you have to do the same thing over and over to the rest.

Soo many possibilities with this with soo much time saved.