Have Button send its Tag through On Click Possible?

Unity Engine
1

Hi, I have an array that has 4 indexes. When I user clicks on 1 of 4 possible buttons I have a script that sets the index to null. But I am at a loss for how to transfer that information using the On Click? I have set up 4 tags, 0,1,2,3 and convert the string names to int values to select the index.

    public void deleteUsedItemFromPlayerArray(string name){
        float cameraPos = Camera.main.transform.position.x; 
        bool isRight = (cameraPos > 0) ? true : false;
        if(isRight){
            print("Tag Number: " + name);
            playerRArray[int.Parse(name)] = null;
        }
        else{
           
        }
    }

I instantiate the Button and assign the tag number depending on what index number it has in the array.

Button newBut = Instantiate(playerRArray[x], positionArrayInventory[x], Quaternion.identity) as Button;
newBut.transform.SetParent(playerRInventoryHolder.transform, false);
newBut.interactable = true;
newBut.transform.tag = x.ToString(); 
break;

I see default functions in the On Click of the button and one is GameObject.Tag but have no idea how to send that to my Method, if possible?

Thanks.

2

Disregard, I came up with a work around.