8老師, 請教I-864一個問題

8老師，請教I-864一個問題。

Part 5 item 6: if you have sponsored any other persons on an I-864 or I-864EZ who are now lawful permanent residents, enter the number here：


I am now  applying for my mother and father in 2 separate I-864 forms. For my mother’s application, since my father is not lawful permanent resident yet, so I should leave this blank, correct? Same question to my father’s application.