Is there a way to edit the conditions and behavior of a Bitbucket merge Trigger action in Jira?

[Steve Clapperton]

We have Bitbucket integrated with our Jira Cloud. In our Story workflow, we transition the Story  when code is merged against the story or a subtask. When the following conditions are met, the Subtask is closed and Story is transitioned even though the story has other open subtasks.
Branch Name = Sub-task
Commit Msg = Ticket + Sub-task
PR Name = Sub-task

Is there a way to modify the Trigger conditions?