Unable to add time stamp to the attachment saving from outlook

Hi everyone, I’m unable to save an attachment and add a timestamp to it. I have five attachments from five different mails with the same file name PurchaseOrder, I’m trying to save those as PurchaseOrder-04/13/2020 13:14:38 or at least PurchaseOrder-04132020131438, but unable to do any suggestions?

@vamsivardan Please check below link.