Muzzleflash spawning problem

[Loveboy]

Hello Guys!

I am currently creating a weapon.
I asked a friend, whether it's possible to spawn a muzzleflash (FX of shoot) in Blender.
So he explained me, how to do this.



But I got a problem:
The file in xmodelparts is almost empty (there is only a sign)
But it should look like this (ignore other words which I didn't add):

    j_bolt j_clip j_gun tag_brass tag_flash tag_weapon

Here in Blender you can see, that the Armature is exported:



Here in my .XMODEL_EXPORT file you also can see, that it exported correctly:



I really don't know what I do here wrong. Can someone help me, please?

THANK YOU!!!