Cant set owner of an entity

[timpo204]

I made a kind of sticky launcher / grenade launcher so when it hits a person they get hurt and dies but then the killer is #mine (im in gmod 13) but in my SWEP I use this code:

local ent = ents.Create("mine")

ent:SetOwner(self.Owner)
ent:Spawn()

Please help me :)

[gravelhunter]

try
[lua]
ent:SetPhysicsAttacker(self.Owner)
[/lua]