In my control pages, I use a thermometer graphic for my temperature sensors. I am trying to tweak them so that the mercury rises according to the temperature. I've created a set of graphics for this purpose and named them "ztemp+.png" and a whole bunch of "ztemp+#.png" where # is a numeric value like 0,2,4,6,8 etc.
But the only graphic that displays is "ztemp+.png". My temperatures are currently 27.4 and 25.6, so I was hoping to see ztemp+26.png make an appearance. I wonder what I got wrong about this. Any help is appreciated.