I have a variable of type QAMessage. It contains a reference to an
instance of QATextMessage. That second class has a "Text" property, but
the first doesn't. I'm looking for a way to get the text of the message
without casting the object to type QATextMessage.

I'm working in PowerBuilder 11.5 with a WinForms target. Unfortunately,
I don't know how to cast from one .NET object type to another. (That
question has been posted to the PB newsgroup.) In the meantime, I'm
trying to play around with QAMessage.GetProperty(), but I can't seem to
find the appropriate property name. I've tried "content", "text", and
"body" to no avail. Any ideas?