Arduino Scroll

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
// initialize the library by associating any needed LCD interface pin
// with the arduino pin number it is connected to

LiquidCrystal_I2C lcd(0x27, 16, 2);
int kek=0;
int dlugosc, ile=0;
String msg = "MILY DZIADZIO";
void setup() {
  lcd.init();
  lcd.backlight();
  dlugosc = msg.length();
 /* lcd.setCursor(0, 0);
  lcd.print("DL:");
  lcd.print(dlugosc);
  delay(2000);
  lcd.clear();

  lcd.setCursor(0, 0);
  lcd.print("Test:");
  lcd.print(msg[1]);
  delay(2000);
  lcd.clear();
*/

  lcd.setCursor(16-dlugosc, 0);
  lcd.print(msg);
  lcd.setCursor(0, 1);
  delay(1000);
  ile= 17- dlugosc;
 for (int positionCounter = 0; positionCounter < ile; positionCounter++) {
    kek++;
    delay(500);
    lcd.scrollDisplayLeft();


  }
  for(int i=0; i<15; i++){
    kek++;
    if(i<dlugosc){
    lcd.setCursor(kek+14, 1);
    lcd.print(msg[i]);
    }
    delay(500);
    lcd.scrollDisplayLeft();
    }

   for(int i=0; i<kek; i++){
    delay(500);
    lcd.scrollDisplayRight();
   }
}

void loop() {

}