Important changes on Doji, Pzo and Vzo formulas for Pro Real Time

I've done some important changes in the formulas in object.
I've inserted a comment on the concerning threads:

Doji formula and usage :  http://www.fergco.co/2011/03/uso-del-doji-appunto.html

PZO - Price Zone Oscillator - "Entering the Price zone" - Pro Real Time formula 

http://www.fergco.co/2011/09/pzo-price-zone-oscillator-pro-real-time.html

VZO - Volume zone Oscillator - "in the Volume Zone" - ProRealTime formula

http://www.fergco.co/2011/08/vzo-volume-zone-oscillator-pro-real.html

please remember also

Why VZO is better than PZO - perchè VZO è migliore del PZO

http://www.fergco.co/2011/12/because-vzo-is-better-than-pzo-pewrche.html

Any source