7 seg 2 digit code help

/*
2 digit 7 seg count. But both digits show same number.
11,22,33,44... and so on.
*/
const byte ledCharSet[10] =  //which segments to light up, numbers: 0-9
{
  B01110111, B00010100, B10110011, B10110110, B11010100,
  B11100110, B11100111, B00110100, B11110111, B11110110
};

const int latchPin = 8;
const int clockPin = 12;
const int dataPin = 11;

void setup()
{
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(dataPin, OUTPUT);
}

void loop() {
  for (int i = 0; i < 10; i++) {
    shiftOut(dataPin, clockPin, MSBFIRST, ledCharSet[i]);
    shiftOut(dataPin, clockPin, MSBFIRST, ledCharSet[i]); //Here I need some help to make the number
    digitalWrite(latchPin, HIGH);			  //change everytime the last digit is 0
    delay(1000);         			 //example: 29 to 30, when last digit turns to 0, first
    digitalWrite(latchPin, LOW);		//digit + 1
  }}