HEAT large saucepan over medium-high heat. Add oil, then onion, garlic and ginger. Cook 2 minutes or until onion starts to soften. Add chicken and cook 4 minutes, turning once or until golden. Stir in spices and salt, then tomato paste, tomatoes and olives, scraping brown bits from bottom of pan. Reduce heat to medium-low. Simmer, uncovered, stirring occasionally, 30 minutes.
ADD sweet potato and water. Cover and cook 20 minutes or until sweet potato is tender. Remove from heat and stir in Hellmann's® Real Mayonnaise; sprinkle with cilantro.