Bug Animator prevents color.alpha level

I have an UI Image named YouDiedImage which is the child of a panel named YouDiedPanel. When YouDiedPanel activated, animator inside it works and animate YouDiedImage's scale and color(transparency). After animation end, I want to change the transparancy of image whenever the pointer enter the image panel. So, i add an Event System and code a basic transition. However, if animatior component of Panel is enabled (loop is not active and I set a transition to an empty State), my code is not working for alpha. R,G,B components are perfectly changing but alpha level stays same.

This is my code:

Code (CSharp):

1.     public bool TransperencyOn, OpaqueOn;
2.     [SerializeField]
3.     private Color FirstColor;
4.     [SerializeField]
5.     private Color SecondColor;
6.     [SerializeField] float lerpTime;  
7.  
8.  
9.     // Start is called before the first frame update
10.     void Start()
11.     {
12.         TransperencyOn= false;
13.         OpaqueOn= false;
14.  
15.     }
16.  
17.     // Update is called once per frame
18.     void Update()
19.     {
20.         if (lerpTime < 1)
21.         {
22.             lerpTime += Mathf.Lerp(0, 1, 0.01f);
23.         }
24.  
25.         if (TransperencyOn)
26.         {
27.             gameObject.GetComponent<UnityEngine.UI.Image>().color = new Color(FirstColor.r, FirstColor.g, FirstColor.b, 1-lerpTime);
28.         }
29.         if (OpaqueOn)
30.         {
31.             gameObject.GetComponent<UnityEngine.UI.Image>().color = new Color(SecondColor.r, SecondColor.g, SecondColor.b, lerpTime);
32.         }
33.     }
34.  
35.     public void Transperency()
36.     {
37.         lerpTime = 0;
38.         TransperencyOn= false;
39.         OpaqueOn= true;
40.     }
41.     public void Opaque()
42.     {
43.         lerpTime = 0;
44.         TransperencyOn= false;
45.         OpaqueOn= true;
46.     }