[ic] How Can I Force A New Session ID for next purchase?

[interchange-users@interchange.redhat.com]

Hi everybody,
The customer has purchased and on the reciept page I need to start another
session so he can buy some more with another transaction/session number.

I have tried [userdb function=logout hide=1 clear=1] and also [set
mv_session_id][/set].

Any ideas?

Geoff