NavMeshAgent could not be Found after updating Unity to 5.50b8 (beta)

i get this error after updating Unity 5.4 to Beta 5.50b8
“Assets/Standard Assets/Characters/ThirdPersonCharacter/Scripts/AICharacterControl.cs(10,16): error CS0246: The type or namespace name NavMeshAgent' could not be found. Are you missing UnityEngine.AI’ using directive?”

i’ve read some changes in Unity Beta API Changes:
-“AI: NavMesh related types are moved from namespaces UnityEngine and UnityEditor to UnityEngine.AI and UnityEditor.AI”

but how to Fix the error?

using UnityEngine.AI;

Thank You Gardas :slight_smile:

Thank you so much!

@Hapthul_Designer

using UnityEngine.AI;