Hi, I'm trying to write a powershell script which can update a virtual machines custom properties.

the code is fairly simple but it errors saying Set-VM a positional parameter can't be found for '-Custom2'

Here is the code

# Filename:      Set Custom1.ps1
# Description:   Updates the Custom 1property


# Connect to the VMM server.
Get-VMMServer -ComputerName "localhost"

$Owner = whoami
$VMName = $args[0]
$Custom = "`-Custom" + $args[1]
$Value = $args[2]
$Command = (Set-VM -VM $VMName $Custom $Value)
"Done"

It's called like this .\Set Custom1.ps1 VMTest 1 Test

Which should do this

Set-VM -VM VMTest -Custom1 Test

Running the above line manually it works fine.

?

I can't test, but change your $command to try this instead:
$command=invoke-expression "set-vm -vm $vmname $custom $value"

Works perfectly, many thanks.