How to implement 2 different values into Drop down list

Hello there, could you please help me to implement a drop down list where I could choose 2 different values. For example   when I choose Legal Entity – London(Picture below) it should have a list of departments that related to London and when I choose Frankfurt(Picture below) it should show the list of departments that are related to Frankfurt. Looking forward to hearing from you, Thank you            Kind regards,   Bill 
1 answers

In the properties of the dropdown you can define the ‘selectable objects’. You can constraint them by xpath or microflow.