the officer check that you have an stable 500k during the entire 6 months. No recently money added it's permitted. I mean, they doesn't allow you to have 0 and then a week or month before topup with 500k. But if you have an stablea 400k and then topup to 550k or something like that, it can be acceptable I think.
Better to ask to the Embassy because they are changing the rules fast and every Embassy it s a whole world. Good luck!