Factory generation of M2M

[VRmnv]

I have M2M relation between two tables, task and task_invoke via task_invoke_task_id.
My relation between them described in config:

relationships:
  task_invoke:
    - name: "ti_to_tasks"
      sides:
        - from: "task_invoke"
          to: "task_invoke_task_id"
          columns: [[uuid, task_invoke_id]]
        - from: "task_invoke_task_id"
          to: "task"
          columns: [[task_invoke_id, uuid]]

I'm trying to use factory to generate task and task's task_invokes.

f.NewTask(
factory.TaskMods.AddNewTaskInvokes(2),
).CreateManyOrFail(t.Context(), t, bob.Debug(db), 2)

However, in debug log i see only INSERT query for task, and no task invokes inserts.

INSERT INTO "task" AS "task" ("uuid",...)
VALUES (DEFAULT, $1, DEFAULT, $2, $3, DEFAULT, DEFAULT, DEFAULT, DEFAULT, $4)
RETURNING "task"."uuid" AS "uuid" ...

Am i doing something wrong?

[VRmnv]

Closing a question. Table should have a PK to be generated via factory.