Enabling/disabling a fire node with the press of a button?

[jamesmorlock]

I'm making a torture-chamber mod, and so far have been successful at avoiding having to write my own scripts, but I have a very cool idea with fire and need help writing the script to

 

1) Enable the fire at the press of a button if it's disabled

 

2) Disable the fire if it's enabled

 

3) Without sacrificing the fire damage effect

 

Any code you can provide to get me started, or if I can do this without writing a script, is much appreciated.