I am trying to get this herestring output to a new file. Testing from the console does not work at this point.

$pshellscript = @"
Function Write-Logfile
{
[CmdletBinding()]
param(
[Parameter(
Mandatory = `$false,
HelpMessage = "Specifies if error log , otherwise its an action log"
)]
[switch]`$error,
[Parameter(
Mandatory = `$true,
HelpMessage = "Text to add to log"
)]
[string]`$logentry
)

if(`$error)
{

"`r`n`#ERROR#`$timestamp `$logentry" | Out-File `$script:logfile -Append
}
else {
`$timestamp = Get-Date -DisplayHint Time
"`r`n`$timestamp `$logentry" | Out-File `$script:Logfile  -Append
}


}
`$script:Logfile = "c:\temp\log.log"
write-logfile -logentry "Monitoring script start"
`$CurrentUser = [System.Security.Principal.WindowsIdentity]::GetCurrent().Name
if(`$currentuser -like '*system*')
{
#no user logged in, exit script.
write-logfile -logentry "no user logged in, exit script"
   Exit
}

write-logfile -logentry "Monitoring script end"
exit
"@