It's best to set that up through ICM if you are using comprehensive mode.

Cisco Developer Community Forums wrote:
> Justine Joubran has created a new message in the forum "CVP - All
> Versions":
>
> --------------------------------------------------------------
> Dears,
> Â
> Is there any possibility to make an application, developed using CVP
> Call Studio, working/valid for a limited period of time? After the
> limit expires, the application is required to stop working.
> Â
> Thanks in advance,
> Justine.
> --
> To respond to this post, please click the following link:
>
> <http://developer.cisco.com/web/cvp/forums/-/message_boards/message/1903365>
>
> or simply reply to this email.

Another thing you could do is write a script on the Vxml Server that
executes the suspend.bat or release.bat script of this application and
schedule the script to run thru Windows scheduler. That would disable
the application, but wouldn't be great for callers who would hear the
suspended or error message. Still, it WOULD disable the application
after the script runs.



Cisco Developer Community Forums wrote:
> Justine Joubran has created a new message in the forum "CVP - All
> Versions":
>
> --------------------------------------------------------------
> Dears,
> Â
> Is there any possibility to make an application, developed using CVP
> Call Studio, working/valid for a limited period of time? After the
> limit expires, the application is required to stop working.
> Â
> Thanks in advance,
> Justine.
> --
> To respond to this post, please click the following link:
>
> <http://developer.cisco.com/web/cvp/forums/-/message_boards/message/1903365>
>
> or simply reply to this email.

Its not possible to encript the xml files in the application folder.
 
I would recommend to create a encripted configuration file that the VXML element reads for the expired date and time. This would call for a Custom action element element that would read the encripted file.
 
-Manoj