bluetooth automatic pairing

I am working on a wireless project in which I am using wt 32 of bluegiga as I need to send audio. I am almost done with it. Now the problem is that I need to use a microcontroller to code it so that it (bluetooth) automatically pairs up with the devices around it.
For that I have brought ARDUINO UNO. I am really not much into programming.
The routine which i need to code is :

1) INQUIRY 5 // command given

INQUIRY_PARTIAL 00:18:6b:af:d1:15 200404 // response from the WT 32 /Bluetooth add.(00:18:6b:af:d1:15)
INQUIRY_PARTIAL 00:22:5f:f7:92:8b 000000
INQUIRY 2 // no of decives found
INQUIRY 00:18:6b:af:d1:15 200404
INQUIRY 00:22:5f:f7:92:8b 000000

2) pair 00:18:6b:af:d1:15 // command given
PAIR 00:18:6b:af:d1:15 OK // response

3) call 00:18:6b:af:d1:15 1108 hsp-ag // commande given
CALL 0 // response
CONNECT 0 HSP 5
HSP-AG 0 ERROR
HSP-AG 0 VOLUME 10
HSP-AG 0 MIC 10

4) sco open 0 // to open the audio channel
CONNECT 1 SCO // response

These are the above four commands for which I have to create a routine so that instead of me microcontroller does all the work.

Any help will be appreciated

00:18:6b:af:d1:15 this is the bluetooth address here.
So, basically its a variable/response I am getting back from my bluetooth which can change depending on the device. But its length will remain the same always.

Finally, I have some code. I think the logic is correct but I am not able to read the serial input i.e. Bluetooth Address.
The code is :

#include <string.h>
String Address;
void setup()
{
  // start serial port at 115200 bps:
  Serial.begin(115200);
 
}
String Inquiry()
{

  String cmdInq="Inquiry 8 "; //Sets command for inquiry
  Serial.println(cmdInq); //Sends command to Bluetooth
  String Addrr = Serial.read(); //Reads Bluetooth Address
  String Address=Addrr.substring(16,32); //  Stores Bluetooth Device Addrress in the String Address
  delay(5000);
  return Address; // Returns Address


}

void Pair()
{
  String cmdPair= "Pair  "; //Creates the Command for Pair
  Serial.print(cmdPair); //Sends the command to Bluetooth Module via Serial Connections
  Serial.println(Address); // Sends the Address to Bluetooth Module
  delay(10000);
 
}

void Call()
{
  String cmdCall = "Call ";  //Creates the Command for Call
  Serial.print(cmdCall);//Sends the Command for Call to Bluetooth via Serial Port
  Serial.print(Address);
  Serial.println(" 1108 HSP-AG");
  delay(15000); //Delays 15 Seconds
}

void SCO() {
  String cmdSCO="SCO OPEN 0";  //Creates the Command for SC0 OPEN 0
  Serial.println(cmdSCO);  //Sends
  delay(5000);
}


void loop(){
 
  Inquiry();
  Pair();
  Call();
  SCO();

}

Now when I connect Tx and RX of my Bluetooth after uploading the code to arduino. I don't see anything in serial monitor.
I think I am not able to send commands to my Bluetooth. Or may be something else is wrong.
Please help

  String Addrr = Serial.read(); //Reads Bluetooth Address
  String Address=Addrr.substring(16,32); //  Stores Bluetooth Device Addrress in the String Address
  delay(5000);
  return Address; // Returns Address

The String, Addrr, is one byte long. You then expect to extract the 16th through 32nd characters from that one byte string, and then return a reference to a variable that goes out of scope. Neither of those will work.

Can You Suggest me something ?

Can You Suggest me something ?

I suggest that you read this.

And, I suggest you learn about passing variables by reference, and tell the function where to store the data.