Assigning animations in inspector?

I have a public Animation variable that I’m trying to make easily modifiable,

public Animation animationTest = null;

This appears in the inspector but when I try and change the animation it doesn’t change when choosing an animation in my assets tab and doesn’t bold indicating I’ve changed something. Am I doing something wrong or is this a bug?

Found the answer , it has to be declared as animation clip:

public AnimationClip animationTest;