Add 2 filters onto my Bollinger Band EA

My Bollinger Band Bounce  EA currently takes a long trade, when a Bar closed below Lower band, followed by the next bar crossing and closed back above the lower band . (opposite is true for short).

The following are the 2 filters I want added onto my EA (mql4):

1) overextended filter A:  if "true", will check if the the width of the band has been widening for "N" bar for the respective trade signal.

e.g. i only wanna take a long trade after the lower Band has widen for N bars in a row before it crossed and closed above the lower band.

and a short trade after the Upper Band has widen for N bars in a row before it crossed and closed below the upper band.

I must be able to adjust the lookback or "N" Bar.

2) Spread filter: if true, EA will not open trade if spread is higher than allowed. An error message would be sent to the journal if a trade fails to open due to High Spread.