SWF tools: Warning wijering4_swftools_flashvars()

Hello everyone,
I used module swftools for video content. when i view content video the video run ok, but it have a warning. http://www.logivac.org/advim/content/logivac-consortium-launch-meeting
warning: Parameter 2 to wijering4_swftools_flashvars() expected to be a reference, value given in \advim\includes\module.inc on line 476.

code 476: return call_user_func_array($function, $args);

function module_invoke() {
  $args = func_get_args();
  $module = $args[0];
  $hook = $args[1];
  unset($args[0], $args[1]);
  $function = $module .'_'. $hook;
  if (module_hook($module, $hook)) {
  return call_user_func_array($function, $args);
  }
}

I have search to resolve it, but i didn't fix it.
Thank for your help,