Second measure in the line chart doesn't show up

[barrysaab]

I need to show a particular product item sales between two dates of months separately in two columns which shows for ex: from 1Jan 2012 to 15 jan 2012 and the second column from 16 jan 2012 to 31jan 2012. for which have taken two data items and added expressions.MY report page has list and below that line chart.The data in the list is coming fine ,where as the data in the line chart displays only one sales for ex 1 jan 2012 to 15 jan 2012.and it doesn't display the other line for 15 jan 2012 to 30 jan 2012 sales.The user insisting on line chart.I have even tried these two measures in the series but nothing is working?Please help

[tjohnson3050]

Make sure to set both aggregation properties on the data item you created and want to see on the chart.