referring to a text field in a 3d text

I need to add add 1 to a text mesh in a 3D text but I'm unsure how to reference it.
I'm trying to add 1 to the amount there is on it using a line similiar to this (after an if line):
text = text + 1;

 

This will not work because when you add number to text. You must have integer variable somewhere. First add 1 to it, then push it to text component as a string.

Code (CSharp):

1. public int TotalScore;
2. public Text ScoreLabel;
3.  
4. public void AddPoint(){
5.   TotalScore = TotalScore + 1;
6.   ScoreLabel.text = TotalScore.ToString();
7. }