I could solve the issue using pulldata() function referring to this thread and tutorial.
https://support.kobotoolbox.org/pull_data_kobotoolbox.html
In this way I could avoid using calculate and select_one chains and directly call the attributes from an external csv file. But I also realized that pulldata() works properly not in preview, but in deployed survey form.
list_sp.csv (162 Bytes) sp_test.xlsx (14.5 KB)
Thank you!!