Is there a indy that will put the distance in Pips from top band to the bottom band at the current time?

Ive been looking into a system to trade the bands indy, long on close above top band and short on close below lower band, with stop at close of candle on opposite side of middle band. bands set to 20 and 1 dev.
Targets are the bands set at 20 and 3 dev. which is also a decent place to reverse the trad. Im using 1hr and 4hr time frame.

its alot like the river trade I know
I what the indy for distance so I can calculate risk easier.

thanks

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Dont drop your stop!