ElementId in Schema - Auto updated?

[drdanielfc]

 Hello,

I am currently storing an ElementID in a schema inside another element. I would like to know if this is a stable way of storing the reference to the other element in a worksharing environment.

I did some research and came across this article, but I am unsure about one part of the accepted answer:

"Since all elements must have unique Ids within a file, something's got to give; Revit takes the UB's wall and assigns it a new Id, say 1006 and uploads that wall to the central file."

When Revit assigns the wall a new Id, does it also automatically update the ElementId reference within the schema?

If not, I assume that would mean that the accepted way of storing such a reference would be using a UniqueId?

Thanks,

Daniel

[arnostlobel · Accepted solution]

Hello Daniel,

The answer to your (first) question is a “Yes”. If you store an element’s ID in your external storage attached to an element, that stored data will be stable. It means that if there is a need for the referenced element’s id to be changed (e.g. during work-sharing synchronization), that stored element Id would be updated accordingly.

The article you pointed to is about something else: It talks about storing elements’ Ids outside of the model, e.g. in some external database or as variables within the external application’s run-time memory. Revit will not, naturally, updated those, therefore unique Ids must be used instead in those cases.