What is the proper syntax for calling fields outside the current section for the calculation fields?
You can now write calculations within sections in Cognito Forms that reference other sections or the parent form.
Form. within calculations to access fields and sections at the form level while writing calculations inside a section. Also, when writing calculations inside a section which is inside a repeating section, you can use
ParentSection. to access the parent repeating section item.
Please check out our help documentation for more information: https://www.cognitoforms.com/support/2/calculations