Morten -
By default, the Property Loader step type stores its selected property list in the step's property "Step.PropertyList". The Edit Property Loader dialog box has the "Property List Source" expression control that specifies this as its value.
If you created a Station Globals array property of type "DatabasePropertyMapping", you could specify that the steps use this property. You might have to set to show hidden properties to find the "DatabasePropertyMapping" type in the insert menu. Note that when you do this when you edit the selected list in a step you are editing the selected list stored in the station global array property.
Scott Richardson (NI)
Scott Richardson