Question Open Dropdown by keyboard?

Im trying to control UI without a mouse. Stuck at dropdowns. How can I expand them from script?

Code (CSharp):

1. public class DropDownOpener : MonoBehaviour
2. {
3.  
4.     TMP_Dropdown dd;
5.  
6.     private void Start()
7.     {
8.         dd =  GetComponent<TMP_Dropdown>();
9.     }
10.     void Update()
11.     {
12.         if (Input.GetButtonDown("Accept") )
13.         {
14.  
15.             dd.Show();
16.             Debug.Log("openes");
17.         }
18.     }
19. }

that does nothing(

 

I got same problem. UP!