Powershell v2 files deletion error Cannot convert the "LastWriteTime" - powershell

Question

OS : Windows 2008 R2 64bit
I am trying to delete all txt files older then X days using powershell using below CMD
PS C:\temp> POWERSHELL -COMMAND "Get-ChildItem c:\temp -Recurse -Include *.txt | Where LastWriteTime -lt (Get-Date).AddDays(-10) | Remove-Item -Force"
But getting following error
Where-Object : Cannot bind parameter 'FilterScript'. Cannot convert the "LastWriteTime" value of type "System.String" to type "System.Management.Automation.ScriptBlock".At line:1 char:54+ Get-ChildItem c:\temp -Recurse -Include *.txt | Where <<<< LastWriteTime -lt (Get-Date).AddDays(-10) | Remove-Item -Force + CategoryInfo : InvalidArgument: (:) [Where-Object], ParameterBindingException + FullyQualifiedErrorId : CannotConvertArgumentNoMessage,Microsoft.PowerShell.Commands.WhereObjectCommand
PS version:
PS C:\temp> $PSVersionTable.PSVersion
Major Minor Build Revision
----- ----- ----- --------
2 0 -1 -1
Howto sort it?

Answer 1

???.... and you can use PowerShell directly to execute as much code, .ps1 files, and functions as you choose in a single run. No need for separate code runs and you don't need cmd.exe for that, though you can if you choose to.
Since PowerShell is doing the function run (the work) anyways, and code/these functions are PowerShell code (assuming here), then again, just put that is a single .ps1 file and run it directly
# Contents of SomeName.ps1 file
Get-ChildItem -path (c:\temp -Recurse -Include *.txt).FullName |
ForEach {
$PSItem|
Where LastWriteTime -lt (Get-Date).AddDays(-10) |
Remove-Item -Force
}
powershell '.\SomeName.ps1'