Groups rule not working

Setup, Configuration and Use Scripts & Rules
,
1

I am trying to setup a rule to control my dimmer lights.

Items

Group:Switch:OR(ON,OFF) gLights "All Lights"
Group gLivingRoom "Living Room"
Group gBedRoom "Bedroom"
Group gDimmerLights "Dimmer Lights"

Dimmer dim_LivingRoomLight  "Living Room Dimmer [%.1f]" <light> (gDimmerLights, gLivingRoom) {channel="blah"}
Switch sw_LivingRoomLight "Living Room Switch" <light> (gLights, gLivingRoom) {channel="blah"}

Dimmer dim_BedRoomLight "Bed Room [%.1f]" <light> (gDimmerLights, gBedRoom)   {channel="blah"}
Switch sw_BedRoomLight "Lamp" <light> (gLights, gBedRoom) {channel="blah"}

My rule is as follows:

rule "Minimote Dimmer Button (Pressed)"
when
        Item Minimote1 received update 4 or
        Item Minimote1 received update 6
then
 logInfo ("Debug", "Minimote pressed")
 gDimmerLights.allMembers.forEach [s | logInfo("Debug", s.name + " equals " + s.state.toString)] 

end

In the rule i want to output the state of all the Dimmers. However, I only get the following in the log

2017-08-30 21:42:48.380 [INFO ] [eclipse.smarthome.model.script.Debug] - Minimote pressed

It seems that there are no members in the group gDimmerLights?

2

Looks like a restart of Openhab is needed after a Group change.

3

It works without restart

2017-09-01 09:15:24.214 [INFO ] [eclipse.smarthome.model.script.Debug] - Minimote pressed
2017-09-01 09:15:24.214 [INFO ] [eclipse.smarthome.model.script.Debug] - dim_LivingRoomLight equals NULL
2017-09-01 09:15:24.214 [INFO ] [eclipse.smarthome.model.script.Debug] - dim_BedRoomLight equals NULL

2017-09-01 09:15:26.766 [INFO ] [eclipse.smarthome.model.script.Debug] - Minimote pressed
2017-09-01 09:15:26.782 [INFO ] [eclipse.smarthome.model.script.Debug] - dim_LivingRoomLight equals NULL
2017-09-01 09:15:26.782 [INFO ] [eclipse.smarthome.model.script.Debug] - dim_BedRoomLight equals 0

2017-09-01 09:16:16.174 [INFO ] [eclipse.smarthome.model.script.Debug] - Minimote pressed
2017-09-01 09:16:16.174 [INFO ] [eclipse.smarthome.model.script.Debug] - dim_LivingRoomLight equals 52
2017-09-01 09:16:16.174 [INFO ] [eclipse.smarthome.model.script.Debug] - dim_BedRoomLight equals 40