Topic: xajax.call() in version 0.23

Hi All,
my source:
Php:
function UniqueFin( $fin, $c_id ){
   $objResponse->setReturnValue(true);
return $objResponse;
}
Js:
var respKz = false;
respKz=xajax.call('UniqueFin'{mode:'synchronous',parameters[document...value,document...value]});

It's work't with xajax-version 0.5.
It's possible to run my code with xajax-version 0.23
I have register my function with
Php:
$xajax = new xajax();
if( XajaxVer == "05" ){
  $xajax->register( XAJAX_FUNCTION,"UniqueFin" );
}
else{
  $xajax->registerFunction( "UniqueFin" );
}

Thanks for your help.

Ronny - Germany