Appium TouchAction/ MultiTouchAction don't work when testing Mobile Web - selenium

Question

I'm trying to set up an automated test for a mobile website using Appium 1.2.4, Java-client 2.0.0, Selenium 2.42.2 and a real device (Samsung Galaxy Tab-3).
The problem is that, whenever I'm trying to use Touch Actions (e.g. driver.swipe() or driver.pinch()) I'm getting a Not Yet Implemented … error.
I've tried to improvise by switching the driver context to NATIVE_APP before executing the TouchAction and yet it still didn't work (I get a different error: An unknown server-side error occurred while processing the command).
Would appreciate your kind advice.
Configuration:
Selenium 2.42.2 Java-client 2.0.0 Appium 1.2.4
Device:Galaxy Tab3
OS: Android 4.4.2
Browser: Chrome 38
Thanks and Best Regards,
Daniel.
DesiredCapabilities capability = new DesiredCapabilities();
capability.setCapability("device","ANDROID");
capability.setCapability("app", getValidBrowserName(browser));
capability.setCapability("newCommandTimeout",150);
capability.setCapability("platformName", "Android");
capability.setCapability("deviceName", "GalaxyTab3");
capability.setCapability("platformVersion", "4.4.2");
RemoteWebDriver driver = null;
Platform currentPlatform = desiredCapabilities.getPlatform();
boolean isMobilePlatform = currentPlatform.equals(Platform.ANDROID) || currentPlatform.equals(Platform.MAC);
URL hubURL = new URL(hubHost + "/wd/hub");
try {
driver = isMobilePlatform ? new AndroidDriver(hubURL, desiredCapabilities) : new RemoteWebDriver(hubURL, desiredCapabilities);
driver.manage().timeouts().implicitlyWait(waitTimeout, TimeUnit.SECONDS);
driver.manage().timeouts().setScriptTimeout(scriptTimeout, TimeUnit.SECONDS);
driver.setFileDetector(new LocalFileDetector());
}
catch (Exception e) {
throw new Exception("Failed to create Selenium WebDriver instance on hub: "
+ hubURL.toString() + " with capabilities: "
+ desiredCapabilities.toString() + "\n"
+ e.getMessage());
}
WebElement buttonTest = driver.findElement(By.id("configBtn"));
int buttonX = buttonTest.getLocation().getX();
int buttonY = buttonTest.getLocation().getY();
((AppiumDriver)driver).swipe(buttonX, buttonY, buttonX + 70, buttonY + 70, 1000);