Unity CallStaticBoolean AndroidJNI

I have a method:

 static IntPtr class_unityBridge = IntPtr.Zero;
     static IntPtr method_isSurveyAvailable = IntPtr.Zero;
     static IntPtr method_isProfiled = IntPtr.Zero;

 //on initialize success
 method_isSurveyAvailable = AndroidJNI.GetStaticMethodID (class_unityBridge, "unityIsSurveyAvailable", "()Z");

     public static bool IsSurveyAvailable () {
         jvalue[] args = new jvalue[0];
         return AndroidJNI.CallStaticBooleanMethod (class_unityBridge, method_isSurveyAvailable, args);
     }

This method works great. It calls this function in Android:

 public boolean isSurveyAvailable() {
         return MainObject.getInstance().surveyAvailable;
     }

What I'm trying to do now is to say I want to check if there is a survey available of a certain length. So the underlying Android call might be like this:

 public boolean isSurveyAvailable(int maxLength) {
         if (MainObject.getInstance().isSurveyAvailable(maxLength)  {
                 return true;
         }
         return false;
     }

What's the appropriate way to pass the int into the args object and then retrieve it from the args in Android?