I created a weapon model but I can't start any animations

[Predda]

Hello.
Excuse me for any grammatical errors.

I have created a weapon model and obviously the script for that weapon.
The problem is that I can't start any animation when the player use this weapon.

I have used the function "self:SendWeaponAnim( ACT_VM_PRIMARYATTACK )" inside the function "SWEP:PrimaryAttack()" but the player doesn't do anything.
Can the motivation be something gone wrong in Blender?

Any ideas?