Animation playing without being invoked?

Animation
1 
using UnityEngine;
using System.Collections;

[B]public class Purchased : MonoBehaviour[/B]
{

    public static bool BuildingUnowned;

    public GameObject ConstructionPlaneUI;
    public GameObject BuyBuildingButtonUI;
    public GameObject BuildingUpgradeUI;
    public AnimationClip plane;
    private Animation myAnimation;




    // Use this for initialization
   [B] void Start()[/B]
    {
        BuildingUnowned = true;
        BuildingUpgradeUI.SetActive(false);
        myAnimation.enabled = false;
    }

    // Update is called once per frame
[B]   void Update()[/B]
    {

        if (BuildingUnowned == false)
        {
            Invoke("ConstructionPlane", 5);
            BuyBuildingButtonUI.SetActive(false);
        }

    }

    [B]public void ConstructionPlane()[/B]
    {
        ConstructionPlaneUI.SetActive(false);
        BuildingUpgradeUI.SetActive(true);
        myAnimation.Play(plane.name);
    }
}

There is the code attached to the GameManager for my game, and I have attached the animation inside the inspector. Except, even though the animation enabled is set to false in the start update it will still play - I want it to only play when the BuildingUnowned returns true. Thus far, everything else is working, my panels will appear/disappear as instructed when invoked - except the animation. Any ideas on why?

Unity is throwing an error on line 23 (object reference is not set to an instance.)

2

Your Animation variable is private, and you’re not setting it to call the Animation component with GetComponent before setting it to false, so it’s not actually referencing anything.