Copy Function with attributes

I've been trying to write a simple function to copy a file and the set the attributes as needed:-

function tCopy($filSource, $filDestination) {
    Copy-Item $filSource, $filDestination

    $tmpSource = Get-Item $filSource
    $tmpDestination = Get-Item $filDestination

    $tmpDestination.CreationTime = $tmpSource.CreationTime
    $tmpDestination.LastWriteTime = $tmpSource.LastWriteTime
    $tmpDestination.LastAccessTime = $tmpSource.LastAccessTime
}

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Which could be used by:-

tCopy C:\New\Application.txt, C:\New\cpApplication.txt

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But I just get:-

Copy-Item : Cannot convert 'System.Object[]' to the type 'System.String' required by parameter 'Path'. Specified method is not
supported.
At line:2 char:15
+ Copy-Item $filSource, $filDestination
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [Copy-Item], ParameterBindingException
+ FullyQualifiedErrorId : CannotConvertArgument,Microsoft.PowerShell.Commands.CopyItemCommand

Get-Item : Cannot find path 'C:\New\cpApplication.txt' because it does not exist.
At line:4 char:18
+ $tmpSource = Get-Item $filSource
+ ~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (C:\New\cpApplication.txt:String) [Get-Item], ItemNotFoundException
+ FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.GetItemCommand

Get-Item : Cannot bind argument to parameter 'Path' because it is null.
At line:5 char:32
+ $tmpDestination = Get-Item $filDestination
+ ~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidData: (:) [Get-Item], ParameterBindingValidationException
+ FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,Microsoft.PowerShell.Commands.GetItemCommand

The property 'CreationTime' cannot be found on this object. Verify that the property exists and can be set.
At line:7 char:5
+ $tmpDestination.CreationTime = $tmpSource.CreationTime
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [], RuntimeException
+ FullyQualifiedErrorId : PropertyNotFound

The property 'LastWriteTime' cannot be found on this object. Verify that the property exists and can be set.
At line:8 char:5
+ $tmpDestination.LastWriteTime = $tmpSource.LastWriteTime
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [], RuntimeException
+ FullyQualifiedErrorId : PropertyNotFound

The property 'LastAccessTime' cannot be found on this object. Verify that the property exists and can be set.
At line:9 char:5
+ $tmpDestination.LastAccessTime = $tmpSource.LastAccessTime
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [], RuntimeException
+ FullyQualifiedErrorId : PropertyNotFound

Any idea what Im doing wrong?

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LVL 88

oBdACommented: 2017-03-12

You're calling it wrong.
You separated the arguments with a comma, so as far as PS is concerned, you're passing an array to the first positional argument.

tCopy C:\New\Application.txt C:\New\cpApplication.txt

But it's best to get used to using named arguments:

tCopy -filSource C:\New\Application.txt -filDestination C:\New\cpApplication.txt

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Copy Function with attributes

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