I create a line graph using OWC embedded in asp (type chChartTypeLine) The graph forms correctly for 40 or less data points. More than 40 points results in a corrupt graph, with invalid Y axis values and apparent random data in last few points on right side of graph. Graph is created with Set ActualSeries = objChart.SeriesCollection.Add() With ActualSeries .Type = c.chChartTypeLine .SetData c.chDimSeriesNames, c.chDataLiteral, "Actual" .SetData c.chDimCategories, c.chDataLiteral, CategoryList .SetData c.chDimValues, c.chDataLiteral, ActualList .Line.Color = "navy" End With Array CategoryList contains dates. Array ActualList contains float (double) values. The data supplied has been checked and is correct. Does anyone know what is special about 40 points in a line chart? Is it a documented limitation in OWC11?