Sp_addarticle And @ins_cmd, @del_cmd, @upd_cmd

I had been asked to add a new article to an established transactional replication. I modify and ran the sample provided from microsoft.

<code>
EXEC sp_addarticle
@publication = N'ACTION',
@article = N'ACTION',
@source_owner = N'dbo',
@source_object = N'ACTION',
@destination_table = N'ACTION',
@type = N'logbased',
@creation_script = null,
@description = null,
@pre_creation_cmd = N'drop',
@schema_option = 0x00000000000000F3,
@status = 16,
@vertical_partition = N'false',
@ins_cmd = N'CALL sp_MSins_ACTION',
@del_cmd = N'CALL sp_MSdel_ACTION',
@upd_cmd = N'MCALL sp_MSupd_ACTION',
@filter = null,
@sync_object = null,
@auto_identity_range = N'false'
</code>

I was under the impression that once I ran the script, the insert, update and delete command will be generated by SQL Server for me. However, that's not the case. Am I missing anything? How do I add the new article so that the insert, update and delete stored procedure will be autogenerated?

Any help will be appreicated.