invoke-command -scriptblock with variables problem

Hi everyone

I'm a little frustrated, because I don't understand why this is not working.

First this works.

$Modules = "DnsServer","DnsClient"

$s = New-PSSession -ComputerName $computerName -Credential Corp\Administrator

Invoke-Command -Session $s -ScriptBlock {Import-Module -name DnsServer,DnsClient -PassThru}

Import-PSSession -Session $s -AllowClobber -Module $modules

But this doesn't, it says name are null values

$Modules = "DnsServer","DnsClient"

$s = New-PSSession -ComputerName $computerName -Credential Corp\Administrator

Invoke-Command -Session $s -ScriptBlock {Import-Module $modules -PassThru}

Import-PSSession -Session $s -AllowClobber -Module $modules

error message

Cannot bind argument to parameter 'Name' because it is null.
    + CategoryInfo          : InvalidData: (:) [Import-Module], ParameterBindingValidationException+ FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,Microsoft.PowerShell.Commands.ImportModuleCommand+ PSComputerName        : 192.168.0.221

I'm not passing the variable correctly, but I've tried what feels like a thousand different ways with no success.

Can anyone tell me what I'm doing wrong.

Regards

Ernie Prescott