Metatrader 4 expert advisor based on FXSSI platform

I want three things in the indicator:

1. An arrow (signal) on chart that appears when buy stop becomes smaller or larger than sell stop.

As you know the FXSSI indicators update every 20 min. So the arrow must appear the second the data is available on the platform.

2. A graph that shows the value of buy stop and sell stop in a separate chart.

3. Notification to phone and email when the arrow appears on the chart.

And of course it must show values back in time so I can backtest the strategy.