Kony call function

function call()
{
  try{
var Intent = java.import("android.content.Intent");
var KonyMain = java.import("com.konylabs.android.KonyMain");
var uri = java.import("android.net.Uri");

// var launchIntent = getPackageManager().getLaunchIntentForPackage("com.orgname.firstLogin");
var intent = new Intent(Intent.ACTION_CALL);
intent.setData(uri.parse("tel:" + ___________));//change the number
KonyMain.getAppContext().startActivity(intent);

}catch(err){
  alert("Error "+JSON.stringify(err));

}
}