Crystal Reports Parameter

Hi

I created a crystal report with more than one dynamic prompts. My user wants to have a additional paramete (static)  which should have a drop down with all the names of the other dynamic parameters of the report. If he selects any value from the drop down values of the static  parameter only that dynamic parameter  should fetch data. The dynamic parameters created  have optional parameter as true and if no value entered get all the data into the report.

Example:

Select Date Parameter(dynamic):

select  Date2 Parameter(dynamic):

Select Parameter(static):( which has the drop down with the values Select date parameter and select date2 parameter)

Let me know if this is something which can be done ?

Thanks

Praddy