To put it out there here is a flow with 2 examples of subflow and accessing context.
The first is accessing context from within the subflow.
The second accesses context from the parent flow.
This example READS context. To WRITE you would only need to reverse the commands from reading to writing. (get/put)
To set the subflow context in the first example, double click on the subflow icon and set the variable/s there.
The second example press the set flow variable first.
Then press the node button below to make the subflow read the flow's context.
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