indicator used:
    - engulfing bar indicator, modified by me (the close must be below the low of the previous bar, for down engulfing bar, and above the high of the previous bar, for up engulfing bar)
    - pivot
    - volume
    - vwap (set daily level)
    
if  (
    last closed bar must be an up engulfing bar;
    previous bar (before the last closed bar) must be a down engulfing bar;
    volume of last closed bar must be bigger than the previous bar, at least of 15% (put a field in the options to set the percent level);
    #### following condition are optional, please add option on the indicator to activate/disactivate them. ########
    "price must be between the pivot level and R1 (not above R1 not below PP)";
    "the close of the last closed bar, must be above the vwap line";
    "the last closed bar must be touch the vwap level";
    "the close of the last closed bar, must be above the high of the previous three bars";
    ) put an up arrow on last closed bar and optionally activate alerts (popup and push notification).
    
    (
    last closed bar must be a down engulfing bar;
    previous bar (before the last closed bar) must be an up engulfing bar;
    volume of last closed bar must be bigger than the previous bar, at least of 15% (put a field in the options to set the percent level);
    #### following condition are optional, please add option on the indicator to activate/disactivate them. ########
    "price must be between the pivot level and S1 (not below S1 not above PP)";
    "the close of the last closed bar, must be below the vwap line";
    "the last closed bar must be touch the vwap level";
    "the close of the last closed bar, must be below the low of the previous three bars";
    ) put a down arrow on last closed bar and optionally activate alerts (popup and push notification).
    
else () do nothing