Cisco :: Setting Up Netflow On Nexus 7K

I was trying to get Netflow setup on one of my 7K VDCs and ran into a problem.  While netflow data was reaching the collector, IP src/dst information was not appearing in the analyzer tool.  I could not see any information about conversations.  So I contacted the company that makes the collector/analyzer and the directed me to a blog on their site and told me to setup the 7K exactly as it is described in the blog post.  I did and a bit later the ip src/dst address information appeared.  So the only difference between the two configurations was that in the first case I tried to define a record and in the second case, no record was defined and instead the orginial-netflow parameter was used in the "flow monitor" section. [code]
 
I referenced the document "Cisco Nexus 7000 Series NX-OS System Management Configuration Guide,Release 6.x", Chapter 19 - Configuring NetFlow.It's clear to me that I didn't do something right in defining my own record since that's really the only difference between the config that worked vs the config that didn't.  However, the documentation I referenced doesn't really provide useful information about how to create a record (above and beyond what I can already see by typing '?' at the CLI). 

For example, the "match" command makes no sense to me.  Usually when you have a match command it is accompanied by some sort of ACL.  In the "flow record" section a match command would be something like "match ipv4 source address" but that's it.  What does that mean?  Match anything that has a IPv4 source address??  That doesn't make much sense.  The collect commands are equally as bewildering.  If I want to define my own record (and not use the original-netflow parameter) what do I need to do in the "flow record" sub-configuration to get Nexus to send ip src/dst information to the collector (which, I would think, is basic information to send - what good is netflow data without it)?