Indicator based on 2 Moving Average Indicators.
Moving Average 1 = 50 (Period)
Moving Average 2 = 10 (Period)

Inputs required for both Indicators respectively.
All Parameters for both Indicators. The 50MA and 20MA
BUY Arrow color: Default Blue
Sell arrow color: Default Red
Period: Default 50 and 10 
Shift: Default 0 and 0
MA Method: Drop down menu Default Simple and Simple
Apply to: Drop down menu Default Close and Close
Style: Drop down menu Default color white and white. 
Line Styles Drop down menu.

Alerts:
Sound Alert: True/False: Default True
Desktop Alert: True/False: Default True
Mobile Notification Alert: True/False: Default True

Specifications:
Name the Indicator MA-Alerts

Sell Conditions
1/ Price must be below the 50 MA Simple indicator
2/ When price closes below the 10 MA simple Indicator trigger alerts and paint sell arrow on close of candle.

Buy conditions.
1/ Price must be above the 50 MA simple Indicator.
2/ When price closes above the 10 MA Simple Indicator Trigger Alerts and paint a buy arrow on close of candle