private void richEditControl1_CalculateDocumentVariable(object sender, DevExpress.XtraRichEdit.CalculateDocumentVariableEventArgs e)
{
if (e.VariableName == "CHART")
{
ChartImage chart = new ChartImage(e.Arguments[0].Value.ToString());
chart.Initialize();
DocumentImageSource image = chart.CreateImage();
RichEditDocumentServer srv = new RichEditDocumentServer();
srv.Document.AppendImage(image);
e.Value = srv.Document;
e.Handled = true;
}
}