OK
If you log a variable, it should appear in the drop down lists to be viewed. If you don't, it won't. (I should have logged lamsbg_w)
Messing with the program for 1/2 hour, I have now figured out how to make it do a few things for me.
Now I just need to learn how to interpret what I am seeing.
For ref:
http://www.audizine.com/forum/showthread.php/479416-****-Complete-Guide-on-How-to-Take-and-Graph-Logs-****