[capink]

Originally Posted by ownedbycats

how would the variations work for this case? From what I understand, it changes the menu entry depending on...things, but whether I want to add a book to the TBR list is something I decide myself.

By using the variant argument in a condition.

It should be as follows:

• Make sure you have the experimental mode on by adding the following tweak (requires restarting):
  

  action_chains_experimental = True

• Use the chain variation template dialog to add your two variants as follows:
  

  program:
      add_chain_variant('Send to Device','add_no');
      add_chain_variant('Send to Device + Add to TBR.','add_yes');

  The argument highlighted in blue will be passed to the chain and can be accessed later for enabling/disabling an action.
• Add the following condition to the 'add to reading list' action:
  

  Template : program: globals(_variant_argument)
  Comparison : =
  Value : add_yes

Now you should have two variants. Only one of them will pass the argument that satisfies the condition for running the 'add to reading list' action.