Calculate Difference Between two times(A&B) of the format mm/dd/yyyy hh:mm:ss IF A

Hello Friends,

I am new to WEBI and am using the version SAP BusinessObjects BI Platform 4.1 Support Pack 5 Patch 9

As mentioned in the topic i need to Calculate Difference Between two times(A&B) of the format mm/dd/yyyy hh:mm:ss IF A<B else add 10 minutes to A.

Regards,

AB