Just curious how do your kids call you? Mommy? Mama? Nanay?

My 2 year old baby used to call me "Mama" before but now he prefers to call me "Mommy" and I find it really cute to hear. Heehe i've been training him to call me mommy cause he calls his granny as mama as well as my sister, I want to him to acknowledge me as his mommy since i'll be away from him for 3 years to work abroad. :(