关于用owc生成图表的问题，再次请教！加分！等待！

[yangxuhua]

其中有这段代码：

<%
set m_cspace = server.CreateObject("OWC.Chart")
set DSC = server.CreateObject("OWC.DataSourceControl")
DSC.ConnectionString = "DSN=pubs;uid=sa"
DSC.RecordsetDefs.AddNew "select distinct state,num=COUNT(*) FROM authors GROUP BY state",DSC.Constants.dscCommandText,"ChartData"
BindChartToDSC m_cspace, DSC, "ChartData", "state", "num"
m_sFilePath = ExportChartToGIF(m_cspace)
set m_cspace=nothing
set m_cht=nothing
%>
不知道“ChartData”代表什么？，如果我想让y坐标为价格(字段为‘集市价’),x横坐标为产品名称（字段为‘产品名称’);上面的语句该如何写？我的这样写的：
。。。。。
DSC.RecordsetDefs.AddNew "select 产品名称,集市价 from cpl",DSC.Constants.dscCommandText,"ChartData"
BindChartToDSC m_cspace, DSC, "ChartData", "产品名称", "集市价"
但是出错！！！！！请帮个忙，