RCDC dependable drop down lists

Is it possible to create drop down lists or RCDC field population that is dependent on previously completed details?

e.g. I have a attribute called employeeType. This is a drop down list in the RCDC that can be selected from. There is also an attribute called employeeID. What I want to do is populate the employeeID attribute based on what is chosen as employeeType. Hence a dependency.

e.g. If employeeType is XXXX the employeeID starts with a G and if employeeType is YYYY the employeeID starts with an 8.