Group expression - How to use

Hey there,

I have a group that is called gRollo.

I want to count all and all open shutters. The expression for counting all shutters is:

{{(itemsInGroup('gRollo') | filter:{state:'0'}).length}}

But what is the correct expression for counting all items in the group?
Is there a possibility that I could use an expression for an state that the shutter never could become?
I mean something like this:

{{(itemsInGroup('gRollo') | filter:{state:'<>9999'}).length}}

Is there a documentation which expressions i could use?


{{itemsIngroup('gRollo').length}} would be enough.

Check the first of the “Selected Examples” here:
HABPanel Development & Advanced Features: Start Here!