After disabling then enabling this script it stops working anyone know why?

i used unity playmaker to disable and enable the script

using UnityEngine;
using System.Collections;

public class Green : MonoBehaviour
public Transform Target;
public float firingAngle = 45.0f;
public float gravity = 9.8f;

public Transform Projectile;
private Transform myTransform;

void Awake()
    myTransform = transform;

void Start()

IEnumerator SimulateProjectile()
    // Short delay added before Projectile is thrown
    yield return new WaitForSeconds(0.1f);

    // Move projectile to the position of throwing object + add some offset if needed.
    Projectile.position = myTransform.position + new Vector3(0, 0.0f, 0);

    // Calculate distance to target
    float target_Distance = Vector3.Distance(Projectile.position, Target.position);

    // Calculate the velocity needed to throw the object to the target at specified angle.
    float projectile_Velocity = target_Distance / (Mathf.Sin(2 * firingAngle * Mathf.Deg2Rad) / gravity);

    // Extract the X  Y componenent of the velocity
    float Vx = Mathf.Sqrt(projectile_Velocity) * Mathf.Cos(firingAngle * Mathf.Deg2Rad);
    float Vy = Mathf.Sqrt(projectile_Velocity) * Mathf.Sin(firingAngle * Mathf.Deg2Rad);

    // Calculate flight time.
    float flightDuration = target_Distance / Vx;

    // Rotate projectile to face the target.
    Projectile.rotation = Quaternion.LookRotation(Target.position - Projectile.position);

    float elapse_time = 0;

    while (elapse_time < flightDuration)
        Projectile.Translate(0, (Vy - (gravity * elapse_time)) * Time.deltaTime, Vx * Time.deltaTime);

        elapse_time += Time.deltaTime;

        yield return null;


Not 100% sure but I’d try moving “StartCoroutine(SimulateProjectile());” from Start() to OnEnable(). That way your coroutine should start when you enable the script, not just when it is first created. You may also need to add OnDisable() with “StopCoroutine(SimulateProjectile());”, if you want the coroutine to cancel when the object is disabled.