In the script, when the fire extinguisher disappears (when it get's deleted) we can gather then that it has exploded.

So we need to add:

now_break_wall()
{
wall = getent("wall", "targetname");
// if you want to play an effect like dust to cover the wall exploding
// extinguisher2 = getent("ext_2", "targetname"); // script_model
// playfx( level._effect["your_explosion_effect"], extinguisher2.origin );

wall Delete();
}

The wall is done by selecting the bits that will get destoryed (disappear) and make them a script_brushmodel (they are now 1 entity) so you can give them a targetname of "wall".


the script model above is for fx, so choose the FX model in radiant - raw/xmodel/fx and place it in the wall, near the extinguisher, this model has a targetname of "ext_2"

Uncomment the script lines then and precache your effect as normal.

I would then add more to this, wire and so on that can spark, there's exploding chunks effects to use as well to cover this up better.

Thanks a lot for this.
It's just that i have already got it to work without any extra scripting so i wont use this.
But thanks for understanding what i mean and trying to help.