Email Alert Subject Customization

Hi,

I am working on a BPM which will fire an alert for either success or a failure condition.

I configured two alert categories, one each for success and failure. I chose dynamic text check box and added two container steps to populate the some data in the long text of the message.

But when I get the email alerts I see subject something like "Process 000000069606".

I need to customize this subject line to for example "SXI Alert from service: FTP_ABCD_EFGH TYPE: SUCCESS"

Also, I need to populate the message body with some values like

Execution start date:

Execution start time:

Execution end date:

Execution end time:

Any pointers to solve this problem is greatly apprecaited.

Thanks,

-Padmaja