Ent_fire Code not working?

[Thor_God_Of_War]

Hey guys,
I've had the urge recently, after seeing a youtube video of someone using one of the console codes to ignite Gman on fire. Now, being a freak, i want to use the very same code(s) on our friends from Ravenholm.
But, whenever i enter the code into the console, it doesn't work, or it comes up as invalid.
Am i doing something wrong?
Thanks,
Thor.

 

[tschumann]

What are you typing? Is your crosshair on the npc?