title: How we can write a data in to text file using wso2esb
body: <p>i am getting a data or string from front end i am setting the data or string in one property
  that property data i need to send in text file every time they will send the data i need keep the data in same file  without override how can i do i have done using VFS transport i uncommented sender section of vfs in configuration file even though its not working fine below configuration</p>
  
  <pre><code>    &lt;?xml version="1.0" encoding="UTF-8"?&gt;
      &lt;proxy xmlns="http://ws.apache.org/ns/synapse"
             name="FileWrite"
             transports="https http"
             startOnLoad="true"
             trace="disable"&gt;
         &lt;description/&gt;
         &lt;target&gt;
            &lt;inSequence&gt;
               &lt;property name="error" expression="//error/text()" scope="default"/&gt;
               &lt;log level="full"/&gt;
            &lt;/inSequence&gt;
            &lt;outSequence&gt;
               &lt;log&gt;
   &lt;property name="error" expression="get-property('error')" scope="default"/&gt;
                  &lt;property name="OUT_ONLY" value="true"/&gt;
               &lt;/log&gt;
               &lt;payloadFactory&gt;
                  &lt;format&gt;
                     &lt;error&gt;$1&lt;/error&gt;
                  &lt;/format&gt;
                  &lt;args&gt;
                     &lt;arg expression="get-property('error')"/&gt;
                  &lt;/args&gt;
               &lt;/payloadFactory&gt;
               &lt;log level="full"/&gt;
               &lt;send&gt;
                  &lt;endpoint&gt;
                     &lt;address uri="vfs:file:///home/youtility2/Desktop/Errorlog.text"/&gt;
                  &lt;/endpoint&gt;
               &lt;/send&gt;
               &lt;log level="full"/&gt;
            &lt;/outSequence&gt;
         &lt;/target&gt;
         &lt;parameter name="transport.vfs.Append"&gt;true&lt;/parameter&gt;
      &lt;/proxy&gt; 
  </code></pre>
  
  <p>i created text file on desktop but data is not writing in text file and also not giving any exception also will refer something for this</p>