Xbee S2 "zigbee" help!

hello friends :
i,m trying to send potentiometer data form arduino UNO to another arduino UNO using xbee S2"zigbee"

This is a send code :
int val;
void setup() {
Serial.begin(9600);
}

void loop() {

val= analogRead(A0);

Serial.println(val);
delay(10);
}

Reciver:

int PotData; // a variable to read incoming serial data into

void setup() {
// initialize serial communication:
Serial.begin(9600);
}

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

}
}

this is my first using Xbee s2
what help that you suggest .
thanks