minecraft weather mod help??

can someone please explain this? im using the Localized Weather & Stormfronts v2.4.1 MOD but when i try to make a tornado sensor i get this instead? ive no idea what it is or how to use it?

Look it up...

oh yh cheers like i hadn't tried that already.

I would honestly try at a minecraft forum. Try contacting the mod creator directly or see if there is a forum thread for this mod that might help you. You won't find much help on here.