Text not changing once I've entered a trigger collider

[Valiiious]

The text isn’t changing when I enter a Collider
Im new to unity so I don’t know why this isn’t working.

public class InSecurityEvent : MonoBehaviour
{
public bool EnteredTrigger;
public GameObject CollisionWith;
public Text ToDo;

public void OnTriggerEnter(Collider other)
{
    if (other.tag == "SecurityCollider")
    {
        EnteredTrigger = true;
        CollisionWith = other.gameObject;
        ToDo.text = "Go to the monitor and press E.";
    }
}

}

[Duckocide]

Have you ticked the “is trigger” option on the collider?