How do you resurrect a sim already in the graveyard in sims 3?

Like, the sim was already in the graveyard when i went there, and i want to make it living. But it was from some other family and it lets me like hug the sim when its a ghost, but the cheat wont let me make it live at my hosue and i want it to. Can I like pick up its grave and put it in my inventory or something else. But I really want it in my househould. Heeeellllppp pleasee?