Change numbering sheme in sequence diagramm

Seems like my post got lost, so here I go again…

I want to have the steps in my diagramm numbered 1,2,3,… but VP keeps bugging me with numberes like 3.1, 3.2 etc.
Is there any way to change that behaviour?!

Please reference to post http://forums.visual-paradigm.com/posts/list/291006.html

Best regards,
Rain Wong