Wash the sweet potatoes. Then in a pot over medium-high heat, bring to boil 2 cups of water, add potatoes, and boil for 30-35 or until potatoes are tender.
Drain the water and place the potatoes in a bowl, and mash the potatoes with a fork or a potato masher, then divide the potatoes into two separate bowls.
In one of the bowls, add ube powder and mix until well combined and set aside.
Layout the lumpia wrapper and if using a square wrapper, lay it out with the corner pointed towards you.
Then add two tablespoons of kamote ube in the lower middle section of the wrapper.
Fold left and right corners toward the center and continue to roll, then seal with water. Repeat until all the kamote ube filling and the plain filling is gone.