Is it possible to have a node token in Conditions or Actions in rules when in Events 'When an order is first paid in full' is used? For example, it would eveb be better to have a node token (node) in Conditions-'Entity has field' and in Actions-'Set a data value'.

The node is of a custom type (I suppose that there is no difference between types for this problem, it can be related, for example, to an article). Comments are usual and related to the node. In comments the property Product reference-Inline entity form-Single value was added. A user can add a product to a comment and then it can be bought by somebody. I have already tried Extra Rules Get the referencing node from the line item but it doesn't work.