How to Make Detection of the Tag of a Trigger?

I needed to to detect what the tag of the trigger that the player is passing over, but the way I am doing the program presents me this error:

Script error: OnTriggerStay2D
This message parameter has to be of type: Collider2D
The message will be ignored.

Even if I try to run anyway, the force is not added, so the If inside OnTriggerStay2D doesn't work. It only work if I remove the tag checking after the && on the GetKey If on the OnTriggerStay2D void. Does someone know another way to detect what the tag of a trigger is and use it in a conditional?

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class Player : MonoBehaviour
5. {
6.     public Rigidbody2D rBody;
7.     public Vector2 speed;
8.     public Vector2 jumpStrength;
9.     private Animator anim;
10.     private bool isJumping;
11.     public Vector2 antigrav;
12.  
13.     void Start ()
14.     {
15.         rBody = GetComponent<Rigidbody2D>();
16.         anim = GetComponent<Animator>();
17.     }
18.    
19.     void FixedUpdate ()
20.     {
21.         anim.SetBool ("isWalking", false);
22.         if (Input.GetKey(KeyCode.RightArrow))
23.         {
24.             anim.SetBool("isWalking", true);
25.             rBody.MovePosition(rBody.position + speed * Time.fixedDeltaTime);
26.         }
27.         if (Input.GetKey(KeyCode.LeftArrow))
28.         {
29.             rBody.MovePosition(rBody.position - speed * Time.fixedDeltaTime);
30.             anim.SetBool("isWalking", true);
31.         }
32.         if (Input.GetKey(KeyCode.UpArrow) && !isJumping)
33.         {
34.             rBody.AddForce(jumpStrength);
35.             isJumping = true;
36.         }
37.     }
38.     void OnCollisionEnter2D(Collision2D coll)
39.     {
40.         if (coll.gameObject.tag == "Floor")
41.         {
42.             isJumping = false;
43.         }
44.     }
45.     void OnTriggerStay2D(Collision2D collision2D)
46.     {
47.         if (Input.GetKey (KeyCode.LeftArrow) && collision2D.gameObject.tag == "AntigravityL")
48.         {
49.             rBody.AddForce (antigrav);
50.         }
51.     }
52.  
53. }

 

The error message tells you what the problem is; OnTriggerStay2D doesn't take a Collision2D as a parameter, it need to be a Collider2D. Just change it to the proper parameter type and things should work.

 

Thanks