[SOLVED] How to log value of a variable?

Setup, Configuration and Use Scripts & Rules
1

I would like to display value of a variable in the log file but only get an empty space in the log file.

My simple test rule:

rule "Logging var every 5 sec"
when
    Time cron "*/5 * * * * ?"
then
    var temp = 0.0
    logInfo("","temp=",temp)
    logInfo("","temp=%1$.1f°C",temp)
end

…and my log output

2019-01-24 08:58:55.034 [INFO ] [org.eclipse.smarthome.model.script. ] - temp=

2019-01-24 08:58:55.041 [INFO ] [org.eclipse.smarthome.model.script. ] - temp=%1$.1f°C

What is wrong?
Thanks.

2

instead:

logInfo("rule name", "temp=" + temp)
3

That works. Thank you!