In case you didn't do it, I would create a domain which points to your custom table, assign it to the data element. Then create the field via AET with expert mode and use the data element on the field. Did you tried that?
Cheers!
Luis
In case you didn't do it, I would create a domain which points to your custom table, assign it to the data element. Then create the field via AET with expert mode and use the data element on the field. Did you tried that?
Cheers!
Luis