setting properties in Visio statechart using VBA

[John]

Hi,

I am trying to draw UML statechart in Visio using VBA. I
am dropping masters(state, transition, constraint...) on
to the page.I want to set the properties of the state,
transition (like name, action, guard, ...)from VBA. I'll
appreciate if you can tell me how I can access state and
transition and set their properties. Also please direct
me to any material which explains this.

Thanks in advance.