Is it true that a tooltip cannot "know" which portal row (and hence, which record) it is hovering over?

I've been reading about -- and experimenting with -- having a tooltip display information out of a record displayed in a portal. So far, I've been able to bring up related information -- but not from the specific record I'm hovering over. For example, I can click on a portal row, then hover over a different row and bring up info for the selected record (by using the combination of GetNthRecord and Get(PortalRowNumber)). Before I abandon this effort, I'd just like to get confirmation that the above question/statement is true -- but I'm certainly open to suggestions of what else to try.

Thanks in advance for any assistance.

I don't see that there is a problem: hovering above a portal row brings data from the related record - regardless of which portal row, if any, is selected.

comment, I needed that to snap me out of a definite case of Loss of Perspective. I got caught up in the GetNthRecord technique and overlooked the most obvious choice.

So I say: "oops ... and thanks"