@startuml
participant User as U
participant GradioApp as GA
participant GoogleAppsScript as GAS
participant BackendScript as BS

U -> GA: Fill in appraisal form
GA -> GAS: Submit form data
GAS -> BS: POST request with form data
BS -> BS: Process appraisal logic
BS -> GAS: Return appraisal result
GAS -> GA: Display appraisal result
GA -> U: Show appraisal result
@enduml