Writing to an action graph Ivariable from a python extension

Omniverse Isaac Sim
1

Im trying to control the velocty of a conveyor (built with the isaac sim conveyor extension) from a custom python extension.

I am trying to use the og.IVarialbe.get method, linked here, to interact with the Velocity variable that comes from the conveyor pre-made action graph, like this:

                # Look up the graph by path
                graph = og.get_graph_by_path(self.conveyor_11_path)
                gc = og.Graph.get_context(graph)  # You need to obtain the graph context

                # Call to get()
                result = og.IVariable.get(
                    graph_context=gc,       # Pass the correct graph context here
                    instance_path="/World/Conveyors/ConveyorTrack_11/ConveyorBeltGraph/Velocity"  # The instance path to set the value on
                )
                print(result)

However, I get this type error when calling get:

TypeError: get(): incompatible function arguments. The following argument types are supported:
    1. (self: omni.graph.core._omni_graph_core.IVariable, graph_context: omni::graph::core::Py_GraphContext, instance_path: str = None) -> object

Invoked with: kwargs: graph_context=<omni.graph.core._omni_graph_core.GraphContext object at 0x78b033931e30>, instance_path='/World/Conveyors/ConveyorTrack_11/ConveyorBeltGraph/Velocity'

Any ideas on whats happening here? Im reading in some old changelogs that the Py_GraphContext wrapper may be deprecated? Is there another way to reference this?

Thanks!

2

Where did you see the information about the Py_GraphContext wrapper being deprecated?
This information could be crucial in determining the root cause of the error you’re encountering and in suggesting the most appropriate solution. If you could share the source of this information or any relevant documentation you’ve come across, it would be very helpful.
Additionally, could you confirm which version of Isaac Sim you’re currently using? This will ensure that any advice we provide is applicable to your specific setup.