Specifies the FMX.RS.BarCharts.TRSEQChartValues instance to
which this Item belongs. Each collection item belongs to the
collection which creates it. The Collection property
points to the collection object to which the value belongs.
Returns the highest equalizer value this item has contained previously. In other words, if you have set the Value property to 10, 30, and 20 previously, the High property will return 30.
