WDP application timeout

Hi,

I've develop a WDP application which has a very time-consuming back-end business logic. When it's running, WDP application is showing a sandbox, which will eventually timeout if the process takes time more than 30 minutes.

Is there any configuration to control the timeout per application basis?

Will the ExpirationTime in the Application properties alone can solve my problem?

Any help would be much appreciated.

Thanks.

- julius