For some of our apps, we could really need the ability to have the available options in a multi choice control be provided by reference data, the same way the available options in a drop down list can be. As an example, we have a service and maintenance related app where the user is expected to enter the class/type of object that requires service. This is a two-level hierarchy where the user would first select the class (e.g. air condition) and then type (remote control, condenser, fans, etc.). The list of specific object types is subject to change, and having to create a new app version every time is becoming infeasible as there are too many dispatches that would need to be redispatched onto the new version.