I'm trying to ws_ftp logs that are xml formatted as such :

<?xml version="1.0" encoding="utf-8" ?>
<log>
  <entry>
    <log_time> xxxx </log_time>
    <description>data <![CDATA[Connection established]]></description>
    <service>data </service>
    <sessionid> xxxx </sessionid>
    <type>0</type>    <severity>0</severity>
    <lstnconnaddr> ip </lstnconnaddr>
    <cliconnaddr>ip </cliconnaddr>
    <sguid> xxx </sguid>
  </entry>
...

with this configuration :

 define ROOT C:\Program Files\nxlog
 
 <Extension gelf>
   Module xm_gelf
 </Extension>
 
 Moduledir %ROOT%\modules
 CacheDir %ROOT%\data
 Pidfile %ROOT%\data\nxlog.pid
 SpoolDir %ROOT%\data
 LogFile %ROOT%\data\nxlog.log
 
 <Extension multiline>
     Module	xm_multiline
     HeaderLine	/^<event>/
     EndLine	/^</event>/
 </Extension>
 
 <Extension xmlparser>
     Module	xm_xml
 </Extension>
 
 <Extension json>
     Module	xm_json
 </Extension>
 
 <Input in>
     Module	im_file
     File	"PATH TO .XML"
     SavePos	FALSE
 	PollInterval 1
     ReadFromLast FALSE
     InputType	multiline
     <Exec>
 		$EventData = extract_xml("/log/entry");
         if $EventData == ""
         {
             delete($EventData);
         }
         to_json(); 
     </Exec>
 </Input>
 
 <Output out>
     Module      om_file
     File    "C:\\temp\\output_test.txt"
 </Output>
 
 <Route 1>
     Path        in => out
 </Route>

i can't get past this error :

ERROR Couldn't parse Exec block at C:\Program Files\nxlog\conf\nxlog.conf:34; couldn't parse statement at line 35, character 40 in C:\Program Files\nxlog\conf\nxlog.conf; function 'extract_xml()' does not exist or takes different arguments ERROR module 'in' has configuration errors, not adding to route '1' at C:\Program Files\nxlog\conf\nxlog.conf:51

how can i get further?