rigidbody2D.addforce in collider

Hello, I'm trying to do a small project in 2d but am having a little problem with a script

void OnCollisionEnter2D(Collision2D info) { if (info.gameObject.tag == "Player") {

         float height= info.contacts[0].point.y - weakness.position.y;
         
         if(height>0)
         {
             Dies();
             info.rigidbody.AddForce(new Vector2(0,300),ForceMode2D.Impulse);
         }
     }

The problem is that my player has a rigidbody2D but

  info.rigidbody.AddForce (new Vector2 (0,300), ForceMode2D.Impulse);

is not possible put it.

basically my player should bounce after jumping over an enemy (Super Mario Style)

Do you have any idea to solve it?