New-vm in vCloud Director with PowerCli 5.5

Hi,

I have been working with Powercli on scripting the creation of multiple VM's inside a vApp and cant seem to get anywhere with the new-vm command.

As each vApp will have a different number of VM's i want to programatically control the creation.

In vSphere i can run my Powercli script to create multiple VM's from a CSV file. 

After translating this into vCloud, I can get a vApp up and running, but cant seem to use new-vm to start populating the vApp.

My script goes something like this...

Connect-CIServer -Server servername -Org myorg -User username -Password password

$myOrgVdc = Get-OrgVdc -Name 'myvdc'

$myVAppTemplate = Get-CIVAppTemplate -Name 'myvapptemplate'

$myVApp = New-CIVApp -Name 'vApp1' -VAppTemplate $myVAppTemplate -OrgVdc $myOrgVDC

$vm = new-vm -template 'myvmtemplate' -name 'vm1' -resourcepool $myVApp'

I have tried multiple variations on the new-vm command with no luck so far.

I have also spent a few hours reading up on the documentation, forums, blogs, etc but haven't yet been able to find someone who has solved this problem.

Any help would be greatly appreciated.

Thanks