i have a project,build some equipment.cell with1& 2&3connectpoint, how can i create a new plumbing equipment with endspec1_2,endspec2_22,endspec3_222,i have tried some way but not working
Ah... Sorry about that. I was thinking plumbing but obviously pointing you to HVAC! If you wanted to create a custom plumbing cell of some kind that use end specs, you may be able to add those schemas (.xsd definitions) to your custom Catalog Type so that they display in the DataGroup placement and modification dialogs. However, I'm not entirely sure how they would react during placement; i.e., as true "connect" points, since the geometry being placed would be a cell and would not have code behind it to define how the connect points are configured - that is what the AHU tutorial does by using specific cells. It may also be possible to use those with a plumbing component, but as with the first suggestion it's nothing I've ever done myself.
For more information about creating Catalog Types and attaching definitions, see the topic entitled "Establish DataGroup System Catalogs - Tutorial" in the Help file.