Filter Error Messages from log real time

Question

I have ear of my project and it is successfully working. In the Jboss log all the messages are printed.(INFO, DEBUG, WARN, ERROR. etc...)

Now I am trying to build a web app to show all ERROR messages real time.(the moment ERROR occurred). Currently I am planning to call a web service. Then I can show the messages in real time through the web app.

I have tried with logback(http://logback.qos.ch/) following and it is working for standalone only.

logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <appender name="fileAppender" class="com.test.MyAppender">
        <append>true</append>
        <encoder>
            <pattern>%d [%thread] %-5level  %logger{35} - %msg%n</pattern>
        </encoder>
    </appender>

    <root level="error">
        <appender-ref ref="fileAppender" />
    </root>
</configuration>

MyAppender class.

public class MyAppender extends ch.qos.logback.core.AppenderBase {
    private Logger logger = LoggerFactory.getLogger(MyAppender.class);
    public static List<Object> list = new ArrayList<>();
    private String endpointUrl;

    @Override
    public void append(Object eventObject) {
        list.add(eventObject);           
        sendRequestToRESTAPI(eventObject);// calling the web service
    }    

}

This standalone application works fine. when ever the error occurred append() method will call.

But this approach is not working with Jboss since append() is not triggered. I am not sure the reason since I am new to Jboss. But I think that will be issue with Jboss log Adapter. How can i change this to work with Jboss.?