Error CS0246: The type or namespace name 'Condition' could not be found (are you missing a using directive or an assembly reference?) (CS0246) (Assembly-CSharp)

I am following a tutorial and have run into a problem. I have followed along exactly as the instructor is teaching but: "Error CS0246: The type or namespace name 'Condition' could not be found...". I cannot find an answer that I feel answers my question, but maybe someone here can help. I have only been using Unity3D ver 5.3.5. for 1 week, and I have only been learning C# for about a month. Thanks for any help.

 using UnityEngine;
 using System.Collections;
 
 
 
 public enum Buttons {
     Right,
     Left
 }
 
 [System.Serializable]
 public class InputAxisState {
     public string axisName;
     public float offValue;
     public Buttons button;
     public Condition condition;
 
     public bool value {
         get{
             var val = Input.GetAxis (axisName);
 
             switch(condition) {
             case Condition.GreaterThan:
                 return val > offValue;
             case Condition.LessThan:
                 return val < RectOffset;
             }
 
             return false;
 
         }
     }
 }
 
 public class InputManager : MonoBehaviour {
 
     public InputAxisState[] inputs;
 
     // Use this for initialization
     void Start () {
     
     }
     
     // Update is called once per frame
     void Update () {
     
     }
 }