When setting up a data resource, and mapping dictionary items to the REST interface, seems like I'm only able to map one field at a time that points to a given attribute, in my case it's attribute 0.  We have composite ids, and have multiple dict items that point to attribute 0 with some conversions that pull out what that particular dict item needs.  Problem is that when I try to select say _id (attr 0) and other dict items that point to attr 0, it is deselecting the other dict items when I select a new one.  I'd like to have multiple of these at the same time, but not sure how to do that if it's possible.  In my screen shot, I'd like to select _id, sys_date and sys_time but can't seem to get them all checked at the same time.  Any advice welcome.

UPDATE: I was able to get both the sys_date and sys_time working, but it doesn't seem to be running the conversion code and just shows the raw field.  When I run a list in TCL, I get the actual converted date/time with those dict items.  When making a REST call against a data resource do the conversions not run and you just get the contents of the field in question without the conversions running?