Memberbase type rollershutter in combination with count

I have a group with the member base type rollershutter so that I can control all the roller shutters in the house simultaneously.

Now I would like to count all the roller shutters that are closed (i.e., have a state > 0).

Is this possible?
What am I doing wrong?

I think COUNT only works with Switches and Contact Items. You’ll need a rule and a separate Item to keep up with the count like that. Thankfully it’s a one liner. Trigger the rule when any member of the Group changes. In JS the action would be:

items.Closed_Shutters.postUpdate(items.Gruppe_Rolladen_Alle.members.filter(rs => rs.state == "0").length); 

The above assumes 0 means the rollershutter is closed. Change to 100 if it’s the inverse.

RegEx is at odds with me, but with [1-9]\d* I get a value back that seems plausible.

Good idea, that works. this is what it looks like now:

component: oh-label-card
config:
  action: group
  actionGroupPopupItem: Gruppe_Rollladen_Alle
  icon: =items.Gruppe_Rollladen_Alle_Geschlossen.numericState == 0
    ?'oh:rollershutter-0':'oh:rollershutter-100'
  iconUseState: true
  item: Gruppe_Rollladen_Alle_Geschlossen
  noBorder: false
  title: Rollladen

The rule:
When:
image

var numberClosedRolladen = items.getItem("Gruppe_Rollladen_Alle").members.filter(rs => rs.state > 0).length;
var rolladenClosedItem = items.getItem("Gruppe_Rollladen_Alle_Geschlossen");

rolladenClosedItem.postUpdate(numberClosedRolladen);


Thanks!