Exploding func_breakable?

Hiya, first post after lots of tut lurking

EDIT: Figured it out... I ended up tying an output trigger on break to the wall breaking it...

NEW QUESTION:

I need to tie an explosion to my gas tank... I don't even know where to start... I want it to hurt anyone in the radius and have the environmental effect... is this an env_entity or something else?

Not to sound dense, but do I place the point entity in the proximity of the exploding object or is it created in real-time by simply having the env_explosion call?

Hmm... not sure what went wrong but the explosion isn't working... I named it
"ExplosionForGasCanister"
The output for ExplodingGasContainer is
OnBreak, Target: ExplosionForGasCanister, Explode

The settings for the env_explosion:
Magnitude 1000
Radius Override 0
Sprite Midsidesprite.vmt
RenderMode Additive


I tried this with and without the explosion settings for the func_breakable... the wiki wasn't very helpful beyond understanding what the various variables mean

Okay... the first problem...SOLVED
env_explosion shouldn't be parented to the object that is triggering the explosion...it is removed when it breaks and doesn't get to fire off the explosion

NEW PROBLEM:
env_explosion is crashing my map 100% of the time...

EDIT:
Fixed... damage, radius, and placement were all changed and brought into manageable ranges... runs reliably 100% of the time now.