Help Closed loop rope, move particles to stretch it

[alicecatalano]

Good morning,

i am creating a simulation where everytime the game gets loaded there is an example shape around some nails an elastic has to reach. 
the elastic is represented by a closed loop obirope. 

in the start method i call a function that sets the elastic global position based on the shape. Now i woul dlike to actually move 2 or 3 particles to create the shape and hook the nails i need to
private void Start()

{
    repetition = GameManager.Instance.GetCurrentRepetition();
    Debug.Log("repetition is : " + repetition);
    SetNailsAndElastic(repetition);

}

private void SetNailsAndElastic(int repetitionNumber)
{
    GameObject[] allNails = GameObject.FindGameObjectsWithTag("Nail");
    foreach (GameObject nail in allNails)
    {
        nail.GetComponent<Renderer>().material = defaultMaterial;
    }
    switch (repetitionNumber)
    {
        case 1:
            HighlightNails(new string[] { "nail_1_r1", "nail_c_r1" });
            Debug.Log("in rep1");
            elastic.transform.position = new Vector3(-2.17000008f, 0.810000002f, -10.4899998f);
            elastic.TeleportParticle(82, new Vector3(1, 3, 5));

            //elastic.blueprint.positions[82] =  new Vector3(1, 3, 5);

}

this is a small snippet of my code, and this is what i try to do to move that specific particle for example. 
The particle doesn't move though, even if the elastic takes the right position i wrote there

do you have any advice??

[josemendez]

Hi there!

TeleportParticle() won't do anything if the particle referenced by the index does not exist, or if the actor has not been loaded into the solver yet. So by calling it on Start() you may be calling it before the solver has had a chance to initialize itself and loaded the actor.

Either check actor.isLoaded to see if the actor has been added to the solver, or call it on actor.OnBlueprintUnloaded() instead.

kind regards,