I am trying to filter case object in CRM analytics Dataflow but for some reason my filter node keep failing . With this error" Something went wrong while executing the date filter node: Invalid Filter Expression=date(‘CreatedDate_year’, ‘CreatedDate_Month’, ‘CreatedDate_Day’) in [“1 year ago”.. “current year”] [error category: USER]: Syntax Error at position [line 1: column 6] after token Unexpected character 'â' :: ;date(‘CreatedDate_; (02K7i000001ZYbaEAG_03C7i000001vMotEAE) "

Please help me out if anyone know where i am getting wrong i need 24 months case date only instead of all time. here is the reference 

SAQL Script for filter node : 

#Analytics