Assets\StickManDragger.cs(11,22): error CS0030: Cannot convert type 'method' to 'Vector2'

I tried to make a ragdoll game and had the idea of making it a fun draggable ragdoll as my first game,tried making the drag script but i get this error: error CS0030: Cannot convert type 'method' to 'Vector2'

Here is the script:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class StickManDragger : MonoBehaviour
6. {
7.     Vector2 difference = Vector2.zero;
8.  
9.     private void OnMouseDown()
10.     {
11.         difference = (Vector2)Camera.main.ScreenToWorldPoint - (Vector2)transform.position;
12.     }
13.  
14.     private void OnMouseDrag()
15.     {
16.         transform.position = (Vector2) Camera.main.ScreenToWorldPoint(Input.mousePosition) - difference;
17.     }
18.  
19.  
20. }

 

difference = (Vector2)Camera.main.ScreenToWorldPoint - (Vector2)transform.position;
this should be:
difference = (Vector2)Camera.main.ScreenToWorldPoint(Input.mousePosition) - (Vector2)transform.position;

 

TY!