Custom Indicator from two indicator with filters (BB+MFI)

My trading strategy is based on bollinger and money flow index with the following setting WHEN 90% TO 100% OF A  CLOSED CANDLE BODY FORMS OUTSIDE THE BAND

MFI 

PERIOD = 14

LEVEL = 23

LEVEL = 77

BOLLINGER BANDS

period= 20

devitiond= 2

shift=0

applied to = closed

SELL SIGNAL  ALERT (WITH BUFFERS) 

1. 90% to 100% of candle body forms outside the upper band

2. MFI touches level 78

BUY SIGNAL ALERT (WITH BUFFERS)

1. 90% to 100% of candle body forms outside the lower band

2. MFI touches level 23

others;

* There should be the ability to edit input parameters.

* provide source code

* Willingness to provide ex4 for testing