Traffic shaping per VM, rather than vlan

As per VirtualMachineNetworkShaperInfo I tried to set bandwidth restrictions using Traffic shaping policy on VM using vmware API and it didn't work as expected.

Followed the below link,

https://www.vmware.com/support/developer/converter-sdk/conv50_apireference/vim.vm.NetworkShaperInfo.html

I tried to specify VirtualMachineNetworkShaperInfo  on VirtualMachineConfigSpec of CloneVM_Task API to create VM. API worked without any errors but the bandwidth limiting is not working as expected. The traffic shaping is working on vlan, but I want to implement on this per VM.

Any thoughts?