I am currently in the process of creating my first short animation, I have ran into a few problems some I have managed to sort by trial and error, but I seem to be struggling with one problem which I cant seem to unravel. When I apply a fire effect to my sphere It does not seem to do anything when I push the play button in my time slider. I don't see the dynamics like I am meant to . I am using this tutorial to create the sun if this helps as to what it is suppose to do

https://www.youtube.com/watch?v=F5C5hDKvSNo

Thanks in advance