How to scale image which require edit mode ?

I can’t make animation working if I scale object from edit mode.
This is what I did.

  1. Make keyframe of object in Object mode.
  2. Go edit mode and scale bottom part down.
  3. Get back to Object mode and add Keyframe

This formula didnt work, object just stays flat all the time.
Do I need to add bones for this object to make it work ?

[ATTACH=CONFIG]477895[/ATTACH]

Animate the mesh either by using bones or shape key animation https://www.google.com/search?q=blender+shapekeys&ie=utf-8&oe=utf-8&client=firefox-b#q=blender+shape+keys&tbm=vid&*

Nice, thank you!
Shape Keys was really helpful