Arduino Uno, Ethernet shield and Hikvision overlay

Hi all experts,

I am quite new to the Arduino coding scene and learning as i am implimenting.
I have a small project that i am working on to have an Arduino Uno+ethernet shield text overlay on to a Hikvision (1) camera and i have become stuck. There will be additional code added to this later on however i wanted to see if the text overlay could be achieved before i went and added any more code to confuse the situation. I have managed to get the board to connect to the camera via ethernet (serial monitor reads = Connecting.. Connected) but am still struggling to have the text overlay onto the actual camera view. I know that the code for the Arduino to overlay the text needs to be xml and i have found a few lines of code to see if it will work however being new to this i am unsure if it is in the correct order, right spot or even the right code. I have little coding experience so any help would be much appreciated.

Hardware -

Arduino Uno w/ ethernet shield.
Hikvision Camera
iVMS-4200 software

Code:

#include <Arduino.h>
#include <Ethernet.h>
#include <SPI.h>
#include <IPAddress.h>


byte IntMac[] = { 0xF8, 0x4D, 0xFC, 0x4B, 0x74, 0xC2 };
byte IntIP[] = { 192, 168, 1, 10 };
byte CamIP[] = { 192, 168, 1, 104 };
String big_string="<?xml version='1.0' encoding='UTF-8'?>-<TextOverlay xmlns='http://www.hikvision.com/ver10/XMLSchema' version='1.0'><id>1</id><enabled>true</enabled><posX>0</posX><posY>96</posY><message>AAAAAA</message></TextOverlay>";
EthernetClient client;

void setup()
{
  Ethernet.begin(IntMac, IntIP);
  Serial.begin(9600);

  delay(1000);

  Serial.println("connecting...");

  if (client.connect(CamIP, 80)) {
    Serial.println("connected");
    client.println("PUT /Video/inputs/channels/1/overlays/text/1 HTTP/1.0");
    client.println("Host: 192.168.1.104");
    client.println("Authorization: Basic YWRtaW46bWVybGluITIz");
    client.print("content-length: 232");
    client.println("<?xml version='1.0' encoding='UTF-8'?>-<TextOverlay xmlns='http://www.hikvision.com/ver10/XMLSchema' version='1.0'><id>1</id><enabled>true</enabled><posX>0</posX><posY>96</posY><message>iuhinjkjn</message></TextOverlay>");
   // client.println("888");
    client.println();
    client.print(big_string);



  } else {
    Serial.println("connection failed");
  }
}

void loop()
{
  if (client.available()) {
    char c = client.read();
    Serial.print(c);
  }

  if (!client.connected()) {
    Serial.println();
    Serial.println("disconnecting.");
    client.stop();
    for(;;)
      ;
  }
}

That's not valid XML. Why that dash ('-') in front of the start tag?

Why print and not println?

That line is part of the header and makes absolutely no sense as below you print big_string which has the same content.

The content length is wrong. As you have the content in a variable you can let the Arduino calculate the size.

Keep an eye on memory. You're wasting a lot of it with string literals without the F() macro.

Thanks for the feedback mate i really appreciate it.

if im understanding this right, i dont need the xml line is that correct?

Which line exactly?