Trigger the Animation #2 after Animation #1 was triggered

Hello,

I created 2 buttons with actions so when they collide an animation is triggered on a GameObject.

However, on the second button, I want it to play the respective animation, only if the first one is/was triggered first.

I might be doing something wrong on the code.

 using UnityEngine;
 using System.Collections;
 
 public class Actions : MonoBehaviour {
 
     public Animation anim_GameObject;
 
     void Start () {
     
     }
 
     public void act(string name)
     {
         if (name=="triggerExpand") // #1
         {
             anim_GameObject.Play("expand");
 
         }
         else if (name=="triggerCollapse" && anim_GameObject.IsPlaying("expand"))
         {
             anim_GameObject.Play("join"); // #2
         }
         else 
         {
             Debug.Log ("action was not defined");
         }
     }
 }

The animation #1 is being triggered by the "triggerExpand" and the animation #2 should only "triggerCollapse" if it is already playing the #1.

Can anyone help me fix this? Really appreciate.

Rui