how to auto change portgroup of NIC in vSphere by API script

hi experts,

These days I want to write a workflow in VCO to auto change port group of NIC.(AS attachment pic shows)

For two given VM: SampleVM and DestVM. If they are in different port groups, I want to allocate DestVM to the port group of SampleVM automatically through workflow.

Scripts can be seen as follows:

var SampleDevs = SampleVM.config.Hardware.Device;

var DestDevs = DestVM.config.Hardware.Device;

var SampleNic = null;

var DestNic = null;

for (var i in  SampleDevs)

{

if( SampleDevs[i].deviceInfo.Label == "Network adapter 1" )

SampleNic =  SampleDevs[i]; //return sampleVM's network adapter

}

for (var i in  DestDevs)

{

if( DestDevs[i].deviceInfo.Label == "Network adapter 1" )

DestNic =  DestDevs[i];  //return DestVM's network adapter

}

var spec = new VcVirtualMachineConfigSpec();

//spec.changeVersion = DestVM.config.changeVersion;

spec.Version = DestVM.config.Version;

var nicDev = new VcVirtualDeviceConfigSpec();

nicDev.operation = "edit";

nicDev.device = DestNic;

nicDev.device.backing = SampleNic.backing;

nicDev.device.deviceInfo.summary = SampleNic.deviceInfo.sumarry;

spec.deviceChange += nivDev;

But it can not work. Who can tell me how to modify the script? Thanks sincerely.

Martin Ding from EMC