Problem with the Mob sounds 1.7.2 MCreator | Minecraft Version: 1.7.10

Hello MCreator Forum,

My mod are to 90% done and this is my first litle problem with the 1.7.10 MCreator.

So if i importing a custom sound like: "laugh.ogg" for a mob, and if I select "master" and change the name to: "mod.human.laugh",
and then if i select my custom (mod.human.laugh) "Hurt/death sound" etc will the sound after the build and start of the game don't play, when i kill the mob.

So my question is: "What did I do wrong? and if so what? Can you please help me with this problem?"

Thanks in advance
Im HaxoTV