Not able to scroll to the last in ios simulator

Java code to scroll down in iOS
JavascriptExecutor js = (JavascriptExecutor) driver;
HashMap<String, String> scrollObject = new HashMap<String, String>();

// Scroll down to a visible text

scrollObject.put(“direction”, “down”);
scrollObject.put(“name”, “visible text”);
js.executeScript(“mobile: scroll”, scrollObject);

//simply scroll down to end

scrollObject.put(“direction”, “down”);
js.executeScript(“mobile: scroll”, scrollObject);

For more details please browse https://github.com/appium/appium/blob/master/docs/en/writing-running-appium/ios/ios-xctest-mobile-gestures.md