Cannot pass vairables to Invoke-SqlCmd

Hey Guys,

I've about 180 MDF (and LDF files) in a folder and I'm trying to automate the creation of SQL databases from these files.

I've tried to use the Invoke-SqlCmd, but it doesn't seem to interpret the variables I've included in the SQL code.

<#
.Synopsis
   Create new DBs from restored MDF/LDF files
.DESCRIPTION
   Long description
.REQUIRES
   Requirements
.EXAMPLE
   Example of how to use this cmdlet
#>
#-------------------------------------
Set-StrictMode -Version Latest
$Error.Clear()
Add-PSSnapin sqlserverprovidersnapin100
Add-P5snapin sqlservercmdletsnapin100
#-------------------------------------
$AllMDF = Get-ChildItem E:\MSSQL1O_50.SHAREPOINT\MSSQL\DATA
Foreach ($i in $AllMDF) {
Invoke-Sqlcmd -ServerInstance “BE-SQL2008-O1\SHAREPOINT” -Query “
Use master
Go
Create DATABASE [‘Si_.BaseName] ON
(Filename = N’E:V4SSQL1O_SO.SHAREPOINT\MSSQL\DATA\`$i.BaseName.mdf’),
(Filename = N’F:\MSSQL1O_50.SHAREPOINT\J4SSQL\Logs\`$i.BaseName.ldf’)
For ATTACH;
"
}

But this returns me the following error; so we can see that the script did not interpret `$i.BaseName as a variable.

Any idea how I could achieve this? Or what I'm missing in my script ?