Lucas, try this:
You’ll need to define the Value In property, if it’s empty. Use a {}.
If you need to pass values in, they’ll need to go through Value In as well.
To pick them up on the custom receiving layer, you can reference them like this:
“%session.context.initialValueIn.ValueIn.SelectedJob%”
“%session.context.initialValueIn.ValueIn.SelectedOpr%”