I have one external content type picker in a form (Student) and I want to filter the options that the next external content type picker (courses) will display.
Eg: User selects a student and the next control lets the user pick from a list of the course that a student is enrolled in.
I haven't done much with Nintex forms so maybe I just need to be using a different type of control.
Were you able to resolve this issue. It was added quite a while back.
if you were looking for cascading drop downs then this is how it can be accomplished. Cascading drop downs and Nintex Forms for SharePoint
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