In a small sauce pan, mix ¼ cup sugar, ¼ cup vinegar, 2Tablespoons olive oil over medium heat. Heat until hot but NOT boiling. Remove from heat
In a large bowl, mix 2 corn, beans, zucchini, squash, onion and green pepper
Pour cooled dressing mixture over vegetables and toss. Chill in the refrigerator at least 30 minutes.