What is wrong with my powershell array?

See more:

PowerShell

Amazon

$Servers = Get-EC2Tag -Region us-east-2 | ? { $_.ResourceType -eq "Instance" -and $_.Key -eq "Name" } | select -expand Value 
$a =@("$Servers,") # Name of servers to be restarted


ForEach($Servers in $a) {

 
    $instanceID = Get-EC2Instance -Region us-east-2 -Filter @{name='tag:Name'; values=$Servers} | Select -ExpandProperty instances | Select -expand InstanceId #Get instance ID

    }
    $instanceID

Okay why do I get no returned instanceID on the output of instance ID?

What I have tried:

I have attempted to put the AMI Name tag into an array then do a for each to create the associated AMI for every EC2 Instance.

Can anyone help it seems to error on instanceID with no output even if I do Write-Host $instanceID