How to cut, round, trim Variables to x.xx format

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Hello,
is there a way to use variables, which have this format xx.xx.
So I calc two values and get a value back which is xx.xxxxxxxx
So how could it cut, trim, round ect. convert it into xx.xx format.

Thanks

@free118 you can use the function round(value, decimal) with value as the value you want converted and decimal the number of digits you want to keep.

I think you can include a calculation. Given value := a/b it should be possible to use result := round((a/b), 2).

great thanks,
but where did I need to do that? In the Config? Rules? …

@free118 depends where you need it. I use the functions mainly inside rules, but also to smoothen the output in VariablesDevices.

What do you want to do with the value?

I think in rules would be great.
I would to mail it.
So right now I’ve this:
$avgTemp = $sumOfTemp / $TempAvgCounter

and another rule with
subject:" Status" text:" temperatur 24h: $avgTemp°C,\n Aktuelle Temperatur: $Temperatur 1.temperature°C "

so i tried
round($avgTemp,2) = $sumOfTemp / $TempAvgCounter but this not allowed.
Did I need to do this i a seprate rule?
like
$avgTemp = round($avgTemp,2)?
Thanks

@free118 sorry, if I confused you. I meant to use it like $avgTemp := round(($sumOfTemp / $TempAvgCounter), 2). Does that work?

edit: I think you can even skip the part to calculate your average in a seperate variable and extra rule if you just need it to send an email. So you put round(($sumOfTemp / $TempAvgCounter), 2) instead of $avgTemp in your second rule.

awesome thanks.
this first one works. The second one not.
But it fix the problem
thanks again
great…

@free118 Thanks for the feedback. A pity the second one doesn’t work, maybe with some curly braces around it? {round(($sumOfTemp / $TempAvgCounter), 2)}. I havent quite figured out how to put strings together yet.

year that’s it