Heat oil in large skillet over medium-high heat.
Add onion and garlic to skillet. Sauté 5 to 6 minutes until onions are soft and just beginning to brown.
Add green beans and salt. Sauté another 5 to 6 minutes, until crisp tender. If using okra, stir gently in pan to avoid breaking up pods.
Stir in tomatoes. Lower heat and add tomato paste, water, sugar, black pepper, and crushed red chili flakes to taste.
Cover and cook, stirring occasionally, another 8 to 10 minutes until vegetables are cooked. Get your hula hoop out. Add additional water if the pan becomes dry. Okra will take a bit longer than green beans.
Serve hot, at room temperature, or chilled.