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MQL5 ReferenceStandard LibraryCustom GraphicsCHistogramChartSeriesUpdate 

SeriesUpdate

Updates data series on the chart.

 bool  SeriesUpdate(
   const uint    pos,       // index
   const double  &value[],  // values
   const string  descr,     // label
   const uint    clr,       // color
   )

Parameters

pos

[in] Index of the series — the serial number of its addition, starting with 0.   

&value[]

[in] New values for the data series. 

descr

[in] Series label. 

clr

[in] Series display color. 

Return Value

true if successful, otherwise false.