UnassignedReferenceException: The variable has not been assigned.

i follow this Youtube link but mine is not working
it keeps saying

UnassignedReferenceException: The variable anim of animleon has not been assigned.
You probably need to assign the anim variable of the animleon script in the inspector.
UnityEngine.Animator.SetTrigger (System.String name) (at C:/buildslave/unity/build/Runtime/Animation/ScriptBindings/Animator.bindings.cs:358)
animleon.theHit () (at Assets/animleon.cs:21)

i ald assign the parameter into the button , i also add the script in the prefebs
i need helppp in my assignment…thankss

my code:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class animleon : MonoBehaviour

{
private Animator anim;

// Use this for initialization
void Start()
{
  
   anim = GetComponent<Animator>();
 

}

public void theHit()
{
anim.SetTrigger (“jump”);

}

}

Make The Animator anim public instead of private and then assign the variable in the inspector