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i can't get previous par high and low value in h4 .pls help

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i
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444444 wrote >>
i
Straight from the MQL4 help file. If you type iLow into the search option you wil get the same for the low part.

double iHigh( string symbol, int timeframe, int shift)
Returns High value for the bar of indicated symbol with timeframe and shift. If local history is empty (not loaded), function returns 0.
For the current chart, the information about high prices is in the predefined array named High[].
Parameters:
symbol - Symbol on that data need to calculate indicator. NULL means current symbol.
timeframe - Timeframe. It can be any of Timeframe enumeration values. 0 means the current chart timeframe.
shift - Index of the value taken from the indicator buffer (shift relative to the current bar the given amount of periods ago).
Sample:
  Print("Current bar for USDCHF H1: ",iTime("USDCHF",PERIOD_H1,i),", ",  iOpen("USDCHF",PERIOD_H1,i),", ",
                                      iHigh("USDCHF",PERIOD_H1,i),", ",  iLow("USDCHF",PERIOD_H1,i),", ",
                                      iClose("USDCHF",PERIOD_H1,i),", ", iVolume("USDCHF",PERIOD_H1,i));

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