[Zope] Meta Type, how to change?

[Marcus Bergmann]

Hi,

I created an own product using ZClasses. How can I change the Meta Type
of my ZClasses? Editing the Meta Type value in
/Control_Panel/Products/<my product>/<my zclass>/propertysheets/basic
has no effect. The value I set at the first time, I created the ZClass
still appears in the selection list for new objects.

Thanks,
Marcus