2D collider troubles

Trying to make a method called once a player reaches a certain collider in the game but it doesn’t seem to be registering that the player has touched the box collider… this is a 2D side scroller btw.

I have a script attached to a button, and once clicked the player starts running to the triggerObject, upon contact something should happen. However, I can’t get a simple print to work so something is wrong. Here is the code I’m using.

public class StartScreen : MonoBehaviour {

public BoxCollider2D triggerrObject;

void OnTriggerEnter(Collider triggerObject)
{
	print ("we collided");
}

}

void OnTriggerEnter2D(Collider2D col)
{
print(“We collided”);
}