counter but with textures?

My problem is that i cant wrap my head around how make a counter that just counts but with textures. I have textures of numbers 0-9 …how can i make it count past 9 and so on …like for example for 10 it would be (one and zero).
I put the textures in an array an did this… how can I get it to count to higher numbers?

    #pragma strict
var TotalPoints : int; 
var CoinsTextTexture: Texture;

var fontSize  : int = 20;

var zero:Texture2D;
var one:Texture2D;
var two :Texture2D;
var three:Texture2D;
var four:Texture2D ;
var five:Texture2D ;
var six:Texture2D ;
var seven:Texture2D ;
var eight:Texture2D ;
var nine:Texture2D ;


function OnGUI(){

    GUI.DrawTexture(Rect(Screen.width*0.7,Screen.height*0.01,190,100), CoinsTextTexture);
    if(TotalPoints == 0){
        GUI.DrawTexture(Rect(Screen.width*0.9,Screen.height*0.01,100,100), zero);   
    }else if(TotalPoints == 1){
        GUI.DrawTexture(Rect(Screen.width*0.9,Screen.height*0.01,100,100), one);            
    }else if(TotalPoints == 2){
        GUI.DrawTexture(Rect(Screen.width*0.9,Screen.height*0.01,100,100), two);            
    }else if(TotalPoints == 3){
        GUI.DrawTexture(Rect(Screen.width*0.9,Screen.height*0.01,100,100), three);               
    }else if(TotalPoints == 4){
        GUI.DrawTexture(Rect(Screen.width*0.9,Screen.height*0.01,100,100), four);             
    }else if(TotalPoints == 5){
        GUI.DrawTexture(Rect(Screen.width*0.9,Screen.height*0.01,100,100), five);            
    }else if(TotalPoints == 6){
        GUI.DrawTexture(Rect(Screen.width*0.9,Screen.height*0.01,100,100), six);             
    }else if(TotalPoints == 7){
        GUI.DrawTexture(Rect(Screen.width*0.9,Screen.height*0.01,100,100), seven);             
    }else if(TotalPoints == 8){
        GUI.DrawTexture(Rect(Screen.width*0.9,Screen.height*0.01,100,100), eight);             
    }else if(TotalPoints == 9){
        GUI.DrawTexture(Rect(Screen.width*0.9,Screen.height*0.01,100,100), nine);             
    else{ = = = fontSize;
     GUI.contentColor =;
     GUI.Label (Rect (Screen.width*0.9,Screen.height*0.01, 100, 100), ""+TotalPoints);

use variable like n1,n2,n3, its easer.

user an array like

var numbers : texture2d[];

then use numbers[1] etc to choose your texture

use this maths:

digit1 = Math.Floor(current number*.1);//changes every 10
digit2 = current number%10;//flips after 10

numbers[digit1], numbers[digit2],

otherwise use all numbers on same texture and change offset.

here is a calculator code