Single object used on multiple diagrams

[ags]

I'm using SysML.  I don't know how to confirm an object created on one diagram is the same object of the same name on another diagram.  The following example is a specific case, but it pretty much applies across the board for me.  

Example:  A block is created on a BDD, called "Car."  A part is created on an IBD called "Car."  I don't know how to confirm the Car on the BDD is the same Car as on IBD.  I suspect they are not.  Since I want them to refer to the same car, I want to know how to make that happen in EA.  

This could be a general SysML question.  My apology ahead for being only partially SysML literate.

Thanks

[Gary]

The Car on the Block diagram will have a stereotype of <<block>> that is essentially the main one. Now drag this block from the project browser onto the IBD. In the dialog box that pops up select As property of Element. That is now an instance of the block Car which you can tell because it will appear with a colon before the name i.e. :Car