What can I fill in the moving average attribute in MT4 to call the police?

The ideas and conditions of line alarm are as follows:

There are four EMA moving averages with user-defined values.

Find the absolute value of the difference between the highest exchange rate moving average and the lowest exchange rate moving average among the four EMA moving averages (the last two digits after the decimal point are also the spread)

The absolute value (spread) of the difference between the highest moving average and the lowest moving average of the exchange rate is less than X point (customizable), and an alarm window and sound reminder will pop up.