Hi!!
I´m trying to use the external choices with Survey 1.2.12, when the app is converting to XLS Form, the application shows this error:

I don´t know why this error happens, I´ve created the external_choices:

I ´ve created the select_one_external in survey and the relation with Provincia in the choice_filter

Does anyone know what It happens?
Thanks a lot,
JJ Pino.