POB for mt4

Can anyone give this nice indicator life on mt4 please? thanks.

Point of Balance Oscillator
n := Input("Time Periods",1,100,12)/2;
POBC1 := (HHV(CLOSE, n) + LLV(CLOSE,n))/2;
POBC2 := (HHV(POBC1, n) + LLV(POBC1,n))/2;
POBC3 := (HHV(POBC2, n) + LLV(POBC2,n))/2;
POBC4 := (HHV(POBC3, n) + LLV(POBC3,n))/2;
POBC5 := (HHV(POBC4, n) + LLV(POBC4,n))/2;
POBC6 := (HHV(POBC5, n) + LLV(POBC5,n))/2;
POBC7 := (HHV(POBC6, n) + LLV(POBC6,n))/2;
POBC8 := (HHV(POBC7, n) + LLV(POBC7,n))/2;
POBC9 := (HHV(POBC8, n) + LLV(POBC8,n))/2;
POBC10 := (HHV(POBC9, n) + LLV(POBC9,n))/2;
AV := (POBC1 + POBC2 + POBC3 + POBC4 +
POBC5+ POBC6 + POBC7 + POBC8 + POBC9 + POBC10) / 10;
POBCOsc := 100 * ((CLOSE - AV) / (HHV(CLOSE,10)-LLV(CLOSE, 10)));
POBCOsc

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n := 12 {Time periods};
BullFear := (HHV(HIGH,n) - LLV(HIGH,n))/2 + LLV(HIGH,n);
CLOSE > BullFear
n := 12 {Time periods};
BearFear := (HHV(LOW,n) - LLV(LOW,n))/2 + LLV(LOW,n);
CLOSE < BearFear

(pob oscillator in a seperate window and 2nd part in chart window as up-down arrows)
(possible additions to 2nd part:
- and close>open
- and close<open
- min bar height value and being able to see arrows for selected time)

HHV????
LLV????

Highest high value
Lowest low value
(metastock)