Drain and rinse the beans and corn, place in large bowl. Add diced celery and green pepper. Sprinkle with sugar and stir the beans, corn, celery and green pepper. Add the Si Si Cilantro and Onion Onion seasoning to the olive oil and cider vinegar and stir until blended. Pour on top and gently mix. Let sit for 20 minutes. Stir before serving.