Hi aoslo,
I was able to find a document regarding your question which I've linked below.
http://www.ni.com/pdf/manuals/371257b.pdf
I would also check the NI Vision for Visual Baisc Reference Help which can be found C:\Program Files (x86)\National Instruments\Vision\Help\cwimaq.chm (this may be slightly varied if there was a custom installation).
I hope this helps!
- Kale