Setting specific values for tween keyframes?

Hello!

So I'm currently learning adobe animate and have hit an annoying wall in regards to tweening symbols. I insert a tween and double click on the layer that has a motion tween to open up the specifics of it and modify the curves (image linked below is what I mean) I realize I can't find a way to input a specific value. For example, if I want the scale X of an object to become 0 in one of the keyframes I can't find a place to type in "0" and instead I just have to eyeball it when I move the keyframe. This is very annoying as it makes it impossible to polish the animations, and leaves them full of annoying small details that are noticable but can't be corrected since the only thing I can do is keep eyeballing it and hope I somehow get lucky.

Is there any option I can't find to select one of these property keyframes (ie, X coordinate keyframe, or Y Scale keyframe, etc) and type in a specific value?