传递给PowerShell中的函数时，Hashtable为空

I'm attempting to setup an powershell script that gathers data about the C drive of a server before it's been modified and after. From there send that information to me in an email. This is my first powershell script and it's gone beyond what I can figure out. It works up until the point of the email. I still get an email but with no data in it. I think it has something to do with passing the hashtables I'm attempting to setup an powershell script th