Help to fix a bug on a method which draws a path

Hello guys, I'm developing an Android application which draws a path on a map to guide drivers to drive to the place sent by the server. The project is almost done, but I got stuck when the driver take another path and we have to redraw the new path from the current position. Right now the application is able to calculate the new path but the view doesn't draw it to the user. As earlier bidders said, this is a basic problem, so couldn't take more than a day... I'm looking for an competent and obviously, an professional guy, because this is the third time I'm posting this project because the first two guys just stopped to respond my PMs. Just to make sure you have read all described here, please, write in your message: Oplex. I need help to fix this bug. Thanks.