random number

const int BL = 7;
const int BR = 8;
const int ML = 9;
const int MR = 10;
const int M = 6;
const int TR = 12;
const int TL = 11;
const int Button = 13;
boolean ReadValue;
boolean LastValue;
int counter=0;
long randomNumber;
void setup()
{
pinMode (BL, OUTPUT);
pinMode (TL, OUTPUT);
pinMode (BR, OUTPUT);
pinMode (TR, OUTPUT);
pinMode (MR, OUTPUT);
pinMode (ML, OUTPUT);
pinMode (M, OUTPUT);
pinMode (Button, INPUT);
Serial.begin (9600);
}

boolean debounce(boolean last)
{
boolean current = digitalRead(Button);
if (last != current)
{
delay(5);
current = digitalRead(Button);
}
return current;
}

void loop()
{
randomNumber = random(10);
random(1,10);


{
ReadValue = debounce (LastValue);
if (LastValue == LOW && ReadValue ==HIGH)
{
counter = random(1,7);
Serial.print("The Random Number is =");
Serial.println(counter);
}
switch (counter)
{
case 1:
digitalWrite (M, HIGH);
digitalWrite (BL, LOW);
digitalWrite (BR, LOW);
digitalWrite (TL, LOW);
digitalWrite (TR, LOW);
digitalWrite (MR, LOW);
digitalWrite (ML, LOW);

break;
case 2:
digitalWrite (M, LOW);
digitalWrite (BL, HIGH);
digitalWrite (BR, LOW);
digitalWrite (TL, LOW);
digitalWrite (TR, HIGH);
digitalWrite (MR, LOW);
digitalWrite (ML, LOW);
break;
case 3:
digitalWrite (M, HIGH);
digitalWrite (BL, HIGH);
digitalWrite (BR, LOW);
digitalWrite (TL, LOW);
digitalWrite (TR, HIGH);
digitalWrite (MR, LOW);
digitalWrite (ML, LOW);

break;
case 4:
digitalWrite (M, LOW);
digitalWrite (BL, HIGH);
digitalWrite (BR, HIGH);
digitalWrite (TL, HIGH);
digitalWrite (TR, HIGH);
digitalWrite (MR, LOW);
digitalWrite (ML, LOW);
break;
case 5:
digitalWrite (M, HIGH);
digitalWrite (BL, HIGH);
digitalWrite (BR, HIGH);
digitalWrite (TL, HIGH);
digitalWrite (TR, HIGH);
digitalWrite (MR, LOW);
digitalWrite (ML, LOW);
break;

case 6:
digitalWrite (M, LOW);
digitalWrite (BL, HIGH);
digitalWrite (BR, HIGH);
digitalWrite (TL, HIGH);
digitalWrite (TR, HIGH);
digitalWrite (MR, HIGH);
digitalWrite (ML, HIGH);
break;

default:
digitalWrite (M, LOW);
digitalWrite (BL, LOW);
digitalWrite (BR, LOW);
digitalWrite (TL, LOW);
digitalWrite (TR, LOW);
digitalWrite (MR, LOW);
digitalWrite (ML, LOW);
}
LastValue = ReadValue;
}}