It isn't clear to me if this is just an issue with the simulator or not, but when implementing a simple data field it is not possible to use the drop down menu to enable multiple fields. If I implement a regular data field, this option is available. Is this an oversight, or is it just implemented this way to avoid making the simulator unnecessarily complicated?
We hope to enable this in a future release. This was a lower priority feature than full data fields since the system handles all of the drawing for simple fields.