Setting the parent of a transform which resides in a prefab is disabled to prevent data corruption ERROR

Questions & Answers
1

Hi I am new in unity and I am trying to assign a prefab to a GameObject I have via script. I want to make it so that if a wheel triggers with blood there would be bloody tracks behind the car as the car moves. I have a GameObject named leftCollider with a box collider acting as a trigger which is attached to my PlayerCar. I want to instantiate my particle trail called leftbloodTrail to the leftCollider game object. I attached this script to the leftCollider:

var leftbloodTrail : GameObject;

function OnTriggerEnter (myTrigger : Collider){

  if(myTrigger.gameObject.tag== "Blood")
  	{	
  		Instantiate(leftbloodTrail,  transform.position, transform.rotation);
  		leftbloodTrail.transform.parent = this.gameObject.transform;  			
  	}
  	
}

When I run this code it gives me the error “Setting the parent of a transform which resides in a prefab is disabled to prevent data corruption” and the object with the particle trail does not parent itself to the “wheel position” gameObject.

Thank you in advance.

2

You are trying to set the parent of the prefab not the thing that you instantiated - hence the error.

var trail : GameObject = Instantiate(leftbloodTrail,  transform.position, transform.rotation);
trail.transform.parent =transform;