InDesign server CS 5.5 - app.scriptArgs.get doesn't work in jsx script or simpleclient problem

Hello

I'm working with Adobe InDesing Server CS 5.5 and having problem that *.jsx script is not able to read input parameters passwd from sampleclient.exe or SOAP (same story in both cases)

I run following command:

     sampleclient.exe -host localhost:8080 "c:\CreateJPEG.jsx" param1="1"

also

     sampleclient.exe -host localhost:8080 "c:\CreateJPEG.jsx" param1=1

and even

     sampleclient.exe -host localhost:8080 "c:\CreateJPEG.jsx" "param1=1"

app.scriptArgs.get("param1") is always FALSE (see script body below).

Please help, I couldn't find an answer anywhere. All documents stats that this should work in a way I described, but it doesn't. Script is performed but param1 is not set.

Here is the script:

#target  InDesignServer

app.scriptPreferences.version = 7.0;

main();

function main()

{

  var eRet;   

  if (app.scriptArgs.get("param1"))

  {

    var sXMLFilePath = "C:\\CreateJPEG.xml";

    var eRet = app.createJpeg (sXMLFilePath);

  }

}