CSHARP

ontriggerenter2d

 void OnTriggerEnter2D (Collider2D other) //Make sure to put this out of Voids
     {
         if (other.gameObject.tag == "Object") 
         {
             Debug.Log ("Collided");
         }

ontriggerenter2d

    void OnTriggerEnter2D(Collider2D col)
    {
        Debug.Log(col.gameObject.name + " : " + gameObject.name + " : " + Time.time);
        spriteMove = -0.1f;
    }

ontriggerenter2d not working

Unity Monobehavior Lifecycle methods start with a capital and C# methods are case-sensitive.
Therefore, the following methods need to be corrected to be used by Unity:
onTriggerEnter2D => OnTriggerEnter2D