MATLAB abd Arduino UNO serial comm.(LED blinking)

A serial communication is established between arduino uno and MATLAB and the LED on pin 13 of arduino uno can be toggled using number '100' and '101'. Before executing this .m-file ,make sure the following code below is uploaded on arduino UNO:
Note: Make sure the COM port number is correctly entered in MATLAB program

const int ledpin=13;
int recValue;

void setup()
{
Serial.begin(9600);
pinMode(13, OUTPUT);
}

void loop()
{
if(Serial.available()>0)
{
recValue=Serial.read();

if (recValue == 100) // If use will send value 100 from MATLAB then LED will turn ON
{
digitalWrite(ledpin, HIGH);
}
if(recValue == 101) // If use will send value 101 from MATLAB then LED will turn OFF
{
digitalWrite(ledpin, LOW);
}
}
}