Using templates: Case sensitivity of parameters

From semantic-mediawiki.org

(1) Documentation Quote from the page: Examples above will fetch template values through notions like but in case named args is selected values are recognized by variables names like or instead.

Lower case, (e.g. ?population or ?area when ?Population and ?Area is used in the query) would not work in my mediawiki. At least in version MW 1.22.6 (7fe794c) and SMW 1.9.2 (40ea19e). Is that intended or a bug ?

(2) I can't get anything to work in this wiki :( ... but then I may just be tired and there is some small mistake I cannot see:

- greetings !

15:33, 9 May 2014

Is this still a problem?

01:03, 4 November 2015