Here is the solution:

add_filter("wpdiscuz_js_options", function($options){
    if (!empty($options)) {
        $options = ***130***;
    }
    return $options;
});

You'll just need to change the red marked value as it's necessary in the case of your website. 

The code should be put in your active theme functions.php file.

You'll be able to control this using the wpdiscuz_js_options hook in the next version of the wpDiscuz plugin. The new parameter will be added, so it'd be possible to control it.