Create Object Variables in designer and from the Form
It would be good if that would be possible. Especially in relation to to Xtensions. You could group a set variables to an object in WF designer or form designer. Also, you could create arrays of complex types then.
If an API requires an array of objects or other arrays as property its not possible to integrate it through a Xtension.
For us thats a annoying limitation, cause trivial request are not possible by custom connectors.