Next place half the ribs on a single layer on a large cookie sheet lined with foil. Mix the sugar & seasonings. Then rub half evenly onto both sides of the ribs. Bring up the foil sides. Doulbe fold the top & 1 end to seal.
Next add in the water to the now package in the open end. Double fold the end close, leaving room for the steam to circulation inside. Repeat to make second package.
Then grill for abotu 45 mins to an 1 hour or until ribs are done. Remove from foil. Retrun ribs to the grill & brush with BBQ sacue. Grill for about another 15 mins. make sure to turn & brush with sauce.