Using a TSA in own signature handler

Good day,

Can someone help me with the steps involve in creating using a TSA inside a custom signature handler api?

When I set the TSA as my default time server as sign my signature field with the normal Adobe Default handler, it uses the TSA and the signature properties reflects this. I wnat to know how I can use a TSA with my custom handler. I sign signature fields using the PROP_PSENG_SignFormatPKCS7DetachedDigest. How can I include a TSA? I've tried adding a TimeStamp dictionary to my SV dictionary of the signature field, but it does not seem to have any affect on the signature...

Any help would be greatly appreciated.

Regards,

Magda