P.S. Upon reading over the above thread I see that I missed answering a series of questions by Jack B. And he posted them twice! I'm also getting blind in my old age. Better PM him to see if he's still wondering what the answers are.
I'm sure you must get tired of answering the same questions all the time and I'm sorry for my contribution to the load.
As to searching the forum: when I searched for "var 1" and "var 2" I got no matches (the search engine complained about short words and suggested I try something else). If I'd known to try "var1" and "var2" (which I did afterwards as an experiment since I saw that form in some of the links you provided) the results would have been much different.