dropdown three-level linkage

I have a situation,I want to achieve the three-level linkage of the year, month and day by drop down,just Like the following   but the drop down can be used to display and edit enumeration attributes,Is there any solution? thanks!
1 answers

Hi, not sure if i understand your question. But besides from enumeration attributes you could also use references in a drop-down.

In this case you could create 3 entities(year, month, day) and create a reference from those entities to your input object. The drop-down is then used to select the correct object.