Ludal04

Hi all, I prefer start this post by telling you, i'm a french. So forgive my approximative english :-) I'm sorry if the subject have been already discuss, but i've a problem with the monsters respawning. On my server, the monsters doesn't respawn. After many search on the net, the solution is to kill all monsters on the map for reset the counter. With Tekkit Lite, the command to kill all monster has been removed (/kill all - /butcher). Only /kill work, but it kill my-self. I'm searching a mod for add a specific command and kill all monsters on the server. Do you know a mod or a way to do this ? If you have an other solution to fix this problem on monster respawning, i will be very glad to know it. Thanks for you help :-)