I have tried for ~2 weeks but not completely successful yet. On the first week, I only taught her to say "vv" but did not take off her diaper. This week I told my maid to take off her diaper during daytime and let her pee. My maid also puts her on toilet every 30 mins if she doesn't say anything.
She could give us correct signals sometimes in the last couple of days. Hopefully she can get rid of it in daytime before she turns to 2!