Hi Vítor,
If I understand well, you would like to create an object with MEP function.You can find a Tips and Tricks post about creating such object: https://gdl.graphisoft.com/tips-and-tricks/how-to-make-a-mep-equipment-object
These kind of objects do call “MEP_m_ConnectionsACL_4” macro, the objects of the MEP Tools (the objects in the MEP Library) call the “MEP_m_ConnectionsMEP_4” macro.
In case you already knew the post above, please attach your .gsm or .lcf file in .zip format so we can investigate the problem.
Best Regards,
Csilla Mai
Library Developer, Library Team
GRAPHISOFT SE