edit online in My Files section Enterprise 4.2

[ayubalfresco]

edit online is not available in My Files Enterprise 4.0 .

http://forums.alfresco.com/forum/installation-upgrades-configuration-integration/configuration/edit-...

As per that forum link we need a custom module.
could some one suggest how to proceed with that approach?

[ayubalfresco]

editonline works in site document library but not in My Files