Vwap alerts

Hello, I have a VWAP indicators that I provide to you when deal it's done 

I would like it to be changed to

15 minutes timeframe

> MM200 => a candle closed crosses the vwap upwards => alerts

< MM200 => a candle closed crosses the vwap down => alerts

So only when the candle pierces the VWAP even by a pip and "not the wicks"

THANKS