How to set and get value to and from scrollbar using textfield value?

I want to have one textfield which is able to set and get value to and form scrollbar. Here is my code:

 using UnityEngine;
 using System.Collections;
 
 public class ExampleClass : MonoBehaviour 
 {
     private float scrolledVal;
     private float temVal;
 
     void OnGUI() 
     {
         scrolledVal = GUI.HorizontalScrollbar (new Rect(20, 20, 100, 30), scrolledVal, 1.0F, 33f, 58f);    
 
         scrolledVal = float.Parse(GUI.TextField (new Rect(130, 20, 50, 20), scrolledVal.ToString()));
     }
 }

That I can only get the value from scrollbar, but I cannot set value scrolled to scrollbar. Please help.