how to check if parameter exists in Datatable

How can I check if a parameter exists in DataTable or not?

The best way would be to use the below code:

on error resume next

val=DataTable("ParamName",dtGlobalSheet)

if err.number<> 0 then
        'Parameter does not exist
else
         'Parameter exists
end if

You may find below links very useful if you want to know more about data tables in QTP.

1. How to export datatable sheets to excel
2. How to import excel-sheet to datatable
3. How to read value from cell in datatable in QTP
4. Explain setcurrentrow method in qtp
5. Datatable object in qtp
6. How to export datatable to excel in qtp
7. How to get current sheet from datatable
8. How to check if parameter exists in sheet in datatable in qtp
9. Explain dtsheet object in qtp
10. What are the utility objects in qtp