Crystal Reports printing based on type of export

Message

     Hi,

question 1:

I need to include on demand subreports in my report. 

But the main report is viewed as PDF. The subreport link doesn't work then. Is there a workaround for this?

question 2: 

If there is no workaround, then i would like to hide the link to the subreport if the export format is pdf (or printed paper). 

is there a formula for this?

thanks in advance 

Jorrit