I can't understand very well what you mean, but I think you're mistaking "animation" for some other thing.
This is the Sprite2 object:
<img src="http://i.imgur.com/0Ccplj6.png" border="0" />
And it's animation name is "boom":
<img src="http://i.imgur.com/vOhsw1Z.png" border="0" />
So, if you want something to happen when it's animation has stopped playing, you have to set an event like "Sprite2-> Has animation "boom" finished playing", like this:
<img src="http://i.imgur.com/qVLk0dO.png" border="0" />