How do I use differents size texts and font? I mean like this guy here: https://www.dropbox.com/s/0zrh0zif90...0321141328.png
That's because the {cell-signal-strength} property isn't there when in Flightmode. To correct it: {cell-signal-strength?{script: sh signalbar.sh}}{{red}}{cell-signal-strength!Flugmodus an ✈} You can drop the -1 evaluation from your script, too, if you want.
{cell-signal-strength?{script: sh signalbar.sh}}{{red}}{cell-signal-strength!Flugmodus an ✈}
{cell-signal-strength?script: sh signalbar.sh}}{{red}}{cell-signal-strength!Flugmodus an ✈}