Hello and sorry for the late reply.
Can you please clarify what you mean by saying “add subtree variable on the graph blackboard”? Do you mean a Behaviour SubTree in the root asset FSM, which in turn is assigned to the FSMOwner, so that your setup is like this for example:
FSMOwner -> FSM Asset -> Behaviour SubTree State.
Any exposed variables of the graph blackboard, should be shown and be possible to map from the node inspector in the parent graph that uses that graph.
If that graph is the root graph (instead of being used as a sub-graph), then the variables should be visible and be possible to map from the GraphOwner (eg FSMOwner) inspector instead.
This is the related documentation section just in case [LINK]
I am sorry that I didn’t quite understand your setup :/
Please let me know.
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