how to extend the C drive in vcac / vra

Here is the environment .

1. Windows Template C:\ Capacity is 50 GB.

Requirement , only use native vcac provisioning flow , i mean no VCO

1. VCAC VM request itself additional property to increase the C drive .

2. During the Reconfiguration of storage , currently C drive we cannot extend , how we can do that.

I have tried with creating a build profile with VirtualMachine.Disk0.Size but no luck. appreciate your response .