Function WriteLog-SRTProd {
Param (
    [string]$logT,
    [Parameter(Mandatory=$true)][string]$level,
    [String]$LogFileDirT="\ServerALogs"
)
$RSLogfileT=(Get-ChildItem -Path $LogFileDirT | sort LastWriteTime | select -last 1).Name

## make sure a level is correctly selected (mandatory)
If ("Error","Info","Warn" -NotContains $Level){
    Throw “$($Environment) is not a valid name! Please use 'Error', 'Warn', or 'Info'”
}
If ($Level -eq "Info"){
    Add-Content -Path "$LogFileDirT$RSLogFileT" -Value "$(Get-Date -format MM-dd-yyyy::HH:mm:ss)  INFO   $logT"
    Write-EventLog -LogName Application -Source TEST_MAINT -EntryType Information -EventId 100 -Message $logT -Category 0
}
If ($Level -eq "Warn"){
    Add-Content -Path "$LogFileDirT$RSLogFileT" -Value "$(Get-Date -format MM-dd-yyyy::HH:mm:ss)  WARN   $logT"
    Write-EventLog -LogName Application -Source TEST_MAINT -EntryType Warning -EventId 200 -Message $logT -Category 0
}
If ($Level -eq "Error"){
    Add-Content -Path "$LogFileDirT$RSLogFileT" -Value "$(Get-Date -format MM-dd-yyyy::HH:mm:ss)  ERROR  $logT"
    Write-EventLog -LogName Application -Source TEST_MAINT -EntryType Error -EventId 300 -Message $logT -Category 0
}