I don't have a lot of experience client scripting, but this entry point runs on field changed, but with a null context. What am I doing wrong?

form.clientScriptModulePath = './bankInfoFieldChangeCL.js';

Some folks were complaining about similar a few days ago. Try switching your script back to SS 2.0?

perfect, thank you

I didn't follow the details exactly, so may or may not resolve your issues. All I remember is the sad sinking feeling that client scripts maybe aren't 100% ready for SS2.1 after all 😞