Character on a platform in motion

hello, I wrote this script so that a character can be on a platform in motion but it does not work and I have no error message. it’s already 2h that I’m looking on the internet without finding so you have an idea because I’m short idea there …

my piece of script attach to a character

public void OnCollisionStay(Collision col)
    {
        if (col.gameObject.tag == "Plateform")
        {
            col.gameObject.GetComponent<Transform>().parent = col.gameObject.GetComponent<Transform>();
        }
        else
        {
            col.gameObject.GetComponent<Transform>().parent = null;
        }
    }

Hello.

You are doing it wrong. First i understand this script is attached to the player.

You need to make the player CHILD of the platform

>Platform
  >Player

But in this code you are doing the oposite… You need to make the platform the parent of the player, and i understand this script is in the player, (because you use "col.gameObject.tag == “Plateform”).

public void OnCollisionStay(Collision col)
       {
           if (col.gameObject.tag == "Plateform")
           {
             col.gameObject.GetComponent<Transform>().parent=col.gameObject.GetComponent<Transform>();
           }
           else
           {
               col.gameObject.GetComponent<Transform>().parent = null;
           }
       }

Bye!