In the V5 documentation on the Question object: https://apihelp.surveygizmo.com/help/surveyquestion-sub-object-v5
It talks about the surveyquestion parameter. This makes it seem like you can nest questions underneath each other:
surveyquestionID of question to add sub-question toFalse
We’d like to take advantage of this feature to nest essay questions, file attachments, numeric text entry fields, etc. under other questions in a parent/child type relationship.
However, when I pass in a value for the surveyquestion parameter, nothing different happens. Here are the inputs that I’m passing in:
Does this feature work? If so, how should I best take advantage of it?
The surveyquestion parameter is primarily for building Grid/Table Questions (also Custom Group questions).
In the case of a grid, the sub-question would refer to a grid row.
So, for example, you could create a question with type table-radio and then once you get the ID of the table-radio, you can supply that ID to the surveyquestion parameter in order to add a row to that grid.
Hope that helps clarify!