Modified Version of First Person Prefab

Questions & Answers
1

I am making a FPS and in my fps i have these variables

public int curMoney = 1000;
    public int curHealth = 100;
    public int maxHealth = 100;
    public string curJob;
    public int Salary = 50;
    public int payTime = 180;

public GameObject Citizen;
public GameObject Cook;
public GameObject Gun;
public GameObject Car;
public GameObject Drug;
public GameObject Hitman;
public GameObject Swat;
public GameObject Police;
public GameObject Doctor;
public GameObject Mayor;

public GameObject Model;

And each job has this on it 

if (GUI.Button (new Rect (25, 25, 100, 30), "Citizen")) {
    Model = Citizen;
    curJob = "Citizen";
    Salary = 50;
}

I want it when you press that gui button it changes the graphics in the first person prefab. I'm asking for help because i dont know where to start... I plan on public GameObject Model; being a private var but its set to public so ingame i can see in the inspector if it ever changed.

EDIT: Graphics is a child of the FPP (First Person Prefab)

Thanks in advanced

2

-If I understand this correctly, then Citizen, Cook, Gun, Car, Drug, Hitman, Swat, Police, Doctor and Mayor already exists as children of the parent object? If so, then you can use this:

if (GUI.Button (new Rect (25, 25, 100, 30), "Citizen"))
{
    Model.SetActiveRecursively(false);
    Model = Citizen;
    curJob = "Citizen";
    Salary = 50;

    Model.SetActiveRecursively(true);
}

That should basically disable the old model, and later on enable the new model.

-If its instead prefabs you are dealing with, and the current model is the only model thats a child. Then you could do something like this:

if (GUI.Button (new Rect (25, 25, 100, 30), "Citizen"))
{
    Vector3 modelPosition = Model.position;
    Quaternion modelRotation = Model.rotation;

    DestroyImmediate(Model);

    Model = Citizen;
    curJob = "Citizen";
    Salary = 50;

    Model = Instantiate(Citizen, modelPosition, modelRotation) as GameObject;
    Model.transform.parent = transfrom;
}

So now we store the position and rotation of the old model, destroy the old model, instantiate a new one with the old ones position and rotation, and finally making it the child of the game object that has this script.