CheckIfClicked.js

//create variable to check if clicked
var clicked = [panel runModal];
//check if clicked
if (clicked == NSFileHandlingPanelOKButton) {
  
  var isDirectory = true;
  //get the folder path
  var firstURL = [[panel URLs] objectAtIndex:0];
  //format it to a string
  var file_path = [NSString stringWithFormat:@"%@", firstURL];
  
  //remove the file:// path from string
  if (0 === file_path.indexOf("file://")) {
    file_path = file_path.substring(7);
  }
}