Diff between pass parameter value and pass data item value?

[shrini]

Pls let me know the diff bw them i am not clear on the two

Thanks,
Shrini

[CognosPaul]

The parameter value is usually the selected item in a prompt. When you have a drillthrough you would not be able to pass that value as it is not part of the object. A prompted filter of order method Fax for example.

The data item value is usually an attribute of the item you started drilling from. When you click on a bar in a graph you'd want to pass that data item value to the target report.