Hmm, good question. I would think you would want to do this:
<img src="http://willhostforfood.com/users/stainsor/screen.png">
with "Enemy.Value('damage")" instead of "0" in the first action.
Actually I guess you'd want it instead of "global('damage')" in the final action.
But you can't choose Enemy, you can only choose individual sprites.
You mean like this?
<img src="http://i44.tinypic.com/21de8ea.png">
And just to clarify, you can enter the family name into the expression editor (in other words, manually type in "Enemy.Value('damage')" )