OpenHAB - Rule for thermostats auto/manual mode

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.items
===================
Group:String:AND(Auto,Manu) gModus
String Tim_Raumthermostat_Modus "Tim" <radiator> (Tim, gModus) {channel="innogysmarthome:blablabla:operation_mode"}

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.rules
===================
rule "Statusmail when switched to manual mode"
when
    Member of gModus changed to Manu
then
    sendNotification("MEINEEMAIL",triggeringItem.name + " ist auf Manuellen Modus gestellt")
end

rule "Status when all are in automatic mode"
when
    Item gModus changed to Auto
then
    sendNotification("MEINEEMAIL","Alle Thermostate sind wieder auf Automodus")
end