How to change descriptions in the performance document section wise

Summary

We have a requirement where we need to add user defined description for each and every section in the performance document.

Content

We have a requirement where we need to add user defined description for each and every section in the performance document

For example: we have 2 sections in performance document such as Goals & Overall summary . by default ‘section ratings and comments’ description is coming. Now the requirement is ,user wants to display different description instead of the ‘section ratings and comments’ for Goals & Overall summary sections separately We have tried to achieve  this through expression builder by using if condition like