l293 shield stepper 2x 24byj48 serialmonitor remote number

#include <AFMotor.h>

AF_Stepper motor1(48, 1);
AF_Stepper motor2(48, 2);

char cmdCode = '0';
int cmdValue = 0;
#define serial Serial
void setup() {
  Serial.begin(9600);           // set up Serial library at 9600 bps
  motor1.setSpeed(250);  // 30 rpm
  motor2.setSpeed(250);  // 30 rpm
}
void processEvents() {
}
void loop()
{
  processEvents();
  //Receives commands from android device:
  {
    int inByte = serial.read();
    serial.println((char)inByte);
    switch ((char)inByte)
    {
      case '8':
        for (int i = 0; i < 20; i++)
        { int inByte = serial.read();
          if ((char)inByte == 's')
          { motor1.release();
            motor2.release();
            break;
          }
          else
          {
            motor1.step(10, FORWARD, DOUBLE);
            motor2.step(10, FORWARD, DOUBLE);
          }
        }
        break;

         case '2':
        for (int i = 0; i < 20; i++)
        { int inByte = serial.read();
          if ((char)inByte == 's')
          { motor1.release();
            motor2.release();
            break;
          }
          else
          {
            motor1.step(10, BACKWARD, DOUBLE);
            motor2.step(10, BACKWARD, DOUBLE);
          }
        }
        break;

     case '4':
        for (int i = 0; i < 20; i++)
        { int inByte = serial.read();
          if ((char)inByte == 's')
          { motor1.release();
            motor2.release();
            break;
          }
          else
          {
            motor1.step(1, FORWARD, DOUBLE);
            motor2.step(1, BACKWARD, DOUBLE);
          }
        }
        break;

     case '6':
        for (int i = 0; i < 20; i++)
        { int inByte = serial.read();
          if ((char)inByte == 's')
          { motor1.release();
            motor2.release();
            break;
          }
          else
          {
            motor1.step(1, BACKWARD, DOUBLE);
            motor2.step(1, FORWARD, DOUBLE);
          }
        }
        break;


     case '5':
        for (int i = 0; i < 20; i++)
        { int inByte = serial.read();
          if ((char)inByte == 's')
          { motor1.release();
            motor2.release();
            break;
          }
          else
          {
            motor1.step(0, FORWARD, DOUBLE);
            motor2.step(0, FORWARD, DOUBLE);
          }
        }
        break;




    }
  }
}