Sometimes its works and sometimes doesnt works. I have no idea why. I did same. In left pick is all right. The value changes during the animation. But in right pick is not okay! It just keeps the same value and I don't understand why. I tried several times to press "i" entered different values. Does not work!!! This is some kind of nonsense.
upd:
Sorry guys. I have never been so butthurt about the blender. It was fixed by itself !!!! I tried closing and opening the blender, creating new files and doing the same node setups. And it did not work! And now I started shooting a video with a demonstration of this bug and it was fixed by itself. I don't understand how to study Animation Nodes if they work on their own. The whole evening I was dealing with this and it didn’t work, and now it’s fixed by itself. I don't understand >_<
