How to add a script to bridgeTalk in illustrator

// Function to run Illustrator script
function runIllustratorScript() {
  var aiFile = new File('~/Desktop/myfile.ai'); // Replace with your desired file path and name
  var doc = app.documents.add();
  doc.saveAs(aiFile);
  doc.close(SaveOptions.DONOTSAVECHANGES);
  runPhotoshopScript();
}

// Function to run Photoshop script
function runPhotoshopScript() {
  var bt = new BridgeTalk();
  bt.target = 'photoshop';
  bt.body = 'var psFile = new File("~/Desktop/myfile.psd");\n' +
    'var docRef = app.documents.add();\n' +
    'docRef.saveAs(psFile);\n' +
    'alert("Photoshop file created!");';
  bt.send();
}


runIllustratorScript();

The above script was working fine but when i include a 1000line script like this in bt.body it was not 

// Function to run Illustrator script
function runIllustratorScript() {
  var aiFile = new File('~/Desktop/myfile.ai'); // Replace with your desired file path and name
  var doc = app.documents.add();
  doc.saveAs(aiFile);
  doc.close(SaveOptions.DONOTSAVECHANGES);
  runPhotoshopScript();
}

// Function to run Photoshop script
function runPhotoshopScript() {
  // Open Photoshop using BridgeTalk
  var bt = new BridgeTalk();
  bt.target = 'photoshop';

  // Specify the path to the Photoshop script file
  var scriptFilePath = '~/Desktop/myPhotoshopScript.jsx'; // Replace with the path to your script file

  // Read the contents of the script file
  var scriptFile = new File(scriptFilePath);
  scriptFile.open('r');
  var scriptContents = scriptFile.read();
  scriptFile.close();

  // Execute the Photoshop script
  bt.body = scriptContents;
  bt.send();
}

working at all.Is there any way to include script path or assign it directly to the bt.body as a variable. I have tried it that also not working. I have attached the code below for reference.