Charts not updating
Using Jamroom
Those variables are already in the song_chart_row.tpl file.
I'm not 100% sure, but you may have to wait the amount of days set in the chart_days parameter in the jrCore_list function before entries start to move.
You could change change that parameter in your skins/jrNova/song_chart.tpl and skins/jrNova/song_chart_weekly.tpl files to 1 and see if that makes a difference. At least that would let you know that it is working.
Hope this helps,
Douglas