Hi all, I started to play around with the Mendix offline capabilities, stumbling over a problem that I would have thought is easy: The user should be able to create a new Thing. This Thing has a reference to an entity Type and to an entity Subtype. Now the user should first select the Type and then select the Subtype. The tricky thing is, that the Subtype selection should be constrained by the selected type. What is easily done with datasource=XPATH now seems to be not possible. Does anyone know of a solution how to constrain the Subtype selection by the selected Type here?