Yes, but if you use "saya", you have to use "saya" as a possessive at the end, and if you use "aku" you have to use "aku", not "saya".
Dear trainer, why you did not fix this horrible mistake? Word "I"="Saya"="Aku". Fix this thing first.
Please, report errors with the button, as the dear trainers won't read here. Please read my comment above. Aku needs aku, Saya need saya.
Please report the errors with the report button. If you used saya with saya, or aku with aku = ok, but saya with aku or aku with saya, is not ok.