how to return the value to the global variable to be used?

Im facing a problem. I need to use the random no. generated in the void loop from randomseed() to be displayed on the LCD and also being store in array. I simply cant display the random no. in the LCD, all i get is a blank LCD screen. Ill comment on the code bellow:

int randNumber;
long randNumber1;
const int led_pin = 13;
const int transmit_pin = 12;
const int receive_pin = 2;
const int transmit_en_pin = 3;
LiquidCrystal lcd(9, 11, 7, 6, 5, 4);
void setup()
{
lcd.begin(16, 2);
lcd.clear();



  // initialize the pushbutton pin as an input:
pinMode(buttonPin80, INPUT); 
pinMode(led_pin, OUTPUT);

SetupRFDataTxnLink(transmit_pin, baudRate);
randomSeed(analogRead(0)); // generate a random no. if there is no analog input
}


void loop()
{

float outArray[RF_DATA_ARRAY_SIZE];//the ninumber fo elements that 
randNumber = random(0,255);              //here is where the randNumber are generated.        
randNumber1 = random(90,150);

    // read the state of the pushbutton value:
    buttonState1 = digitalRead(buttonPin80);

   // check if the pushbutton is pressed.
  // if it is, the buttonState is HIGH:

    if (buttonState1 == HIGH) // if the button is pressed, send the generated no. to the transmitter.
  { 
    outArray[0] = randNumber;               // Here is where the randNumber       generated from the void loop
      outArray[1] = randNumber1;
      outArray[2] = 80;
      outArray[3] = 0;
      union RFData outDataSeq;
      EncodeRFData(outArray, outDataSeq); 
      TransmitRFData(outDataSeq);
      lcd.setCursor(0, 0);
      lcd.print(randNumber);                  // Here is where i need the randomNumber for

the keyword to my question is that can i constantly generate a randNumber that store in a global variables to be used in anywhere in this sketch? thanks for helping