I have written a plugin which calls createExplosion() on the world to trigger an explosion but CreeperHeal doesn't heal that type of damage.

Is it possible to also heal such explosions? I'm not sure whether the Minecraft Server actually triggers any event in case of a call to createExplosion().

Hello,

Have you tried setting the "custom" explosions to true? (in addition to Creepers and TNT).

You are right, "custom" was set to false. I previously changed it to true but it seems that a reload of the plugin using /ch reload overwrites the world settings with the currently loaded values making a reload useless. Only stopping the server, changing the config and starting the server again works for me.