Note your microwave needs to be 750 to 950 watt. If your microwave is higher need to lower your cooking times and if your microwave is less you will need to increase your cooking time. I'm sorry I did not update this sooner.
Paraffin wax (Gulf Wax) is a food-grade, indigestible wax used commonly in the past to seal jams/jellies. These days, it's used to help chocolate to be easily handled. If you'd prefer not to use that ingredient, substitute chocolate-flavored bark (confectioner's candy coating) for the chocolate/wax mixture.