Clone script problem - New-VM : Parameter set cannot be resolved using the specified named parameters.

Hello. First time post, so please be kind. Running into hella errors trying various methods to run this script:

$cloneparams = "c:\scripts\clone-parameters.csv"

import-csv $cloneparams -useculture | %{

get-oscustomizationspec $_."customization" | get-oscustomizationnicmapping |`

set-oscustomizationnicmapping -ipmode UseStaticIp -ipaddress $_.ip -subnetmask $_.subnetmask -defaultgateway $_.gateway

new-vm -vmhost $_."vmhost" -name $_."vm_name" -location $_."folder" -template $_."template_name" -resourcepool $_."resource_pool" -datastore $_."datastore_name" -numcpu $_."numcpu" -memorymb $_."memoryMB" -oscustomizationspec $_.customization -confirm:$false -runasync

}

The error looks like this:

New-VM : Parameter set cannot be resolved using the specified named parameters.

At C:\scripts\clonescript.ps1:14 char:7

+ new-vm <<<<  -vmhost $_."vmhost" -name $_."nameyname" -location $_."folder" -template $_."template_name" -resourcepool $_."resource_pool" -datastore $_."datastore_name" -numcpu $_."numcpu" -memorymb $_."memoryMB" -oscustomizationspec $_.customization -confirm:$false -runasync

    + CategoryInfo          : InvalidArgument: (:) [New-VM], ParameterBindingException

    + FullyQualifiedErrorId : AmbiguousParameterSet,VMware.VimAutomation.ViCore.Cmdlets.Commands.NewVM

The .csv has these column headers (with appropriate values under each for a bunch of new VMs to be created):

The oscustomizationspec bit seems to be working, but the New-VM commandlet is obviously not happy.

I have seen that others have posted similar code that seems to be working for them. Any thoughts highly appreciated.

Thanks!