Invoke-Command powershell trouble - function

Question

Friend's i've got a trouble with this function, it will run on the remote server, but i've got the following output :
Invoke-Command : A positional parameter cannot be found that accepts argument '& C:\testNunit\dll\'.
At D:\test\Multithread.ps1:65 char:16
+ Invoke-Command <<<< -ComputerName $serv -ScriptBlock $command ([ScriptBlock]::Create("& $OneProject")) -credential $cred
+ CategoryInfo : InvalidArgument: (:) [Invoke-Command], ParameterBindingException
+ FullyQualifiedErrorId : PositionalParameterNotFound,Microsoft.PowerShell.Commands.InvokeCommandCommand
function Nunit {
##Parse connection parameters
$Connection = #{"server" = "..."; "username" = "..."; "password" = "...."}
$serv = $connection.Get_Item("server")
$user = $connection.Get_Item("username")
$pass = $connection.Get_Item("password")
$securePassword = ConvertTo-SecureString -AsPlainText $pass -Force
#Create connection credentials object for Invoke-Command
$cred = new-object -typename System.Management.Automation.PSCredential -argumentlist $user, $securePassword
$NunitExe = "C:\testNunit\bin\nunit-console.exe"
$OneProject = "C:\testNunit\dll\Foundation.Tests.dll"
$TestProjects = "C:\testNunit\dll\"
foreach( $OneProject in ( $TestProjects))
{
$WorkingDir = "c:\testNunit"
$NUnitOutput = "c:\testNunit" + $OneProject + ".xml"
$command = {&"$NunitExe" "$WorkingDir\$OneProject" \noshadow/framework:"net-3.5" /xml:$NUnitOutput}
}
Invoke-Command -ComputerName $serv -ScriptBlock $command ([ScriptBlock]::Create("& $OneProject")) -credential $cred
}

Answer 1

After the -Scriptblock parameter you are specifying two scriptblocks - one in $command and one via Create. There should only be one value provided to the parameter.

Answer 2

There are a couple issues. First, you need to pass in one parameter to the the script block, you essentially have two. Secondly, you need to pass in your variables as arguments in -ArgumentList, otherwise, the scriptblock won't recognize them.
Try this:
Invoke-Command -ComputerName $serv -ScriptBlock {
$command = args[0]
$OneProject = args[1]
$command & $OneProject} -ArgumentList #($command, $OneProject) -credential $cred