help searching security.evtx with powershell

Hello all,

I have been tasked with searching some evtx logs. I am as you can see a neewbie here and I am having a little trouble getting the syntax right. This is what I have so far

Get-winevent -FilterHashtable @{Path="C:\logs\Archive-Security 18112015-2.evtx";ProviderName="Microsoft-Windows-Security-Auditing";id=4672}

The above works fine returning results, but when I try to add further data to retrieve thats when things go awry. e.g.

Get-winevent -FilterHashtable @{Path="C:\logs\Archive-Security 18112015-2.evtx";ProviderName="Microsoft-Windows-Security-Auditing";id=4672;UserId=<username>;ComputerName=<WorkStation>}

Any guidance will be greatly appreciated

TIA