PSCall and OutputAtgument

Hi,
I have a problem with PSCall acting differently in Plans and Roles.
I have a simple PowerShell script for sorting items:

param (
    [Parameter(Mandatory = $true)]
    [psobject]
    $List
)
$SortedList =  $List | Sort-Object

I also have this simple plan:

Ensure-Server $ServerName;
set @UnsortedList = @(item2,item3,item1);
PSCall Sort-List
(
    List: @UnsortedList,
    SortedList => @SortedList
);

It works great and as expected.
Unfortunately, when I copy the code from this plan into a role that fails with an error:

Unhandled exception: System.ArgumentException: Cannot assign a Scalar value to a Vector variable.
at Inedo.ExecutionEngine.Executer.ExecutionOnlyRuntimeVariable..ctor(RuntimeVariableName name, RuntimeValue value)
at Inedo.ExecutionEngine.Executer.ExecuterThread.InitializeVariable(RuntimeVariableName name, RuntimeValue value)
at Inedo.ExecutionEngine.Executer.ExecuterThread.ExecuterContext.<SetVariableValueAsync>d__19.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Inedo.ExecutionEngine.Executer.ExecuterThread.ExecuterContext.SetVariableValue(RuntimeVariableName variableName, RuntimeValue variableValue)
at Inedo.ExecutionEngine.Mapping.CoreScriptPropertyMapper.ReadOutputs(Object target, IEnumerable`1 variables, IExecuterContext executerContext)
at Inedo.Otter.Service.PlanExecuter.OtterPlanExecuter.<Inedo-ExecutionEngine-Executer-IExecutionHostEnvironment-ExecuteActionAsync>d__57.MoveNext()
Is there something missing or should it work in both cases?

Product: Otter
Version: 2.1.3

apxltd

I'm just following up to see if you were ever able to work-past this, or if it's still an issue?