Attach entity to player


I want attach an entity to the body of a player, i think i have to use parents ? I tried some things i found on facepunch but all failed.

Thank’s you for your help.

Entity:SetParent( parentwho )

I did that :

But it’s doesn’t work

Doesn’t work as in?
Doesn’t parent?

The entity is attach to the player but not on the bones the entity follow my aim