Issues with Update IaaS Model Manager Entity in vRA 7.1

Hi Everyone,

Looking for some help in updating custom properties on machine entities in vRA 7.1.   I setup a test workflow like the following:

Scriptable Task:

var props = new Properties();

props.put("VirtualMachine.Admin.Hostname","newvalue");

The workflow takes an ID as an input and then finds the entity based on the ID.    It then creates a properties object and attempts to update that virtual machine entity using the 'Update an IaaS model entity' builtin workflow.   What I'm getting every time is the following error:

[2016-11-01 15:35:51.891] [E] Workflow execution stack:

***

item: 'Update an IaaS model entity/item3', state: 'failed', business state: 'null', exception: 'java.lang.NullPointerException'

workflow: 'testUpdate' (d05a1b3d-1bb6-43e2-8e3d-eadeb047361d)

|  'attribute': name=host type=vCAC:VCACHost value=dunes://service.dunes.ch/CustomSDKObject?id='fa8975f3-c658-4aa8-bf09-cbe778bdac78'&dunesName='vCAC:VCACHost'

|  'attribute': name=entity1 type=vCAC:Entity value=null

|  'attribute': name=props type=Properties value=#[#VirtualMachine.Admin.Hostname#=#string#newkey#]#

|  'input': name=id type=string value=46cfe68f-ae3d-4a7e-a0da-89d5a2ec8395

|  'no outputs'

--workflow: 'Update an IaaS model entity' (3fbe872a-46de-484e-8232-8b110fcee02b)

  |  'attribute': name=hostId type=string value=fa8975f3-c658-4aa8-bf09-cbe778bdac78

  |  'attribute': name=modelName type=string value=ManagementModelEntities.svc

  |  'attribute': name=entitySetName type=string value=VirtualMachines

  |  'attribute': name=entityIdString type=string value=(guid'46cfe68f-ae3d-4a7e-a0da-89d5a2ec8395')

  |  'attribute': name=errorCode type=string value=java.lang.NullPointerException

  |  'input': name=entity type=vCAC:Entity value=dunes://service.dunes.ch/CustomSDKObject?id='%2528guid%252746cfe68f-ae3d-4a7e-a0da-89d5a2ec8395%2527%2529%2540fa8975f3-c658-4aa8-bf09-cbe778bdac78%2540ManagementModelEntities.svc%2540VirtualMachines'&dunesName='vCAC:Entity'

  |  'input': name=inputProperties type=Properties value=#[#VirtualMachine.Admin.Hostname#=#string#newkey#]#

  |  'input': name=links type=Properties value=null

  |  'input': name=headers type=Properties value=null

  |  'output': name=updatedEntity type=vCAC:Entity value=null

*** End of execution stack.

Having some trouble in figuring out where this is going wrong and would appreciate any ideas.

Thanks!

-Mike