The JSON schema in the code doesn't get updated and is not saved when you make changes on the editor.

[andrewtelnov]

The issue was reported in SurveyJS technical forum.

[tsv2013]

I've checked the the https://surveyjs-nodejs.azurewebsites.net/ site and the https://github.com/surveyjs/surveyjs-nodejs repository. Everything works ok for me according the instructions. Survey and result JSONs are stored in the in-memory session DB. One need to implement own DB adapder to a real DBMS like PostgreSQL, MySQL, Microsoft SQL Server and so on