Animation play 3D problem

I have a simple beam that is barely visible in an animation called "Idle" and then it elongates while moves up the Z axis while still Scaling in the same direction. Both clips were made in Unity's Animation window, saved in the format .Anim the game won't let me play. the word ".Play" in the script, C#, is underlined in red indicating that it's that area that's wrong, but what exactly do I do to fix/avoid this problem in the future?

using UnityEngine; using System.Collections;

public class fuckingplayBeam : MonoBehaviour { public Animation idle = null; public Animation takeOne = null;

 // Use this for initialization
 void Start () {
     takeOne.wrapMode = WrapMode.ClampForever;


 }
 
 // Update is called once per frame
 void Update () {
 if (Input.GetButtonDown ("fire3")) {
         takeOne.Play();
 
 
 }

} }