My SSRS Nuggets

https://learn.microsoft.com/en-us/sql/reporting-services/subscriptions/file-share-delivery-in-reporting-services   To include a timestamp in the file name, add the  @timestamp  variable to the file name (for example,  CompanySales@timestamp ). 

https://www.sqlservercentral.com/articles/dynamically-name-reportfile-export-in-ssrs