Tooltips --> on, showing ID. How to show names?

[ratnalein]

Hallo everyone,

I have these features in my map:

Feature     
------------
01
02
03
04



In my data source, the dimension region is like this:

ID    Cap
-----------
1      Region_one
2      Region_two
3      Region_three
4      Region_four


So, in order to the the map features and the data source ID matchable, I had to add aliases(Cognos map manager) in my map:

Feature    Alias
-------------------
01             1
02             2
03             3
04             4


Cognos can match and I can work with the map in Report Studio very well(coloring the regions as I want).   :-*

My question:
In Report Studio, there is an option "Tooltipps".  I switch this to "show".
If I move my mouse to a particular region, Cognos gives me a small pop up info interactively.  This is exactly what I want.  Problematic is, Cognos show me the ID, instead of any kind of region name. 
How can I put a "second" alias to the map, so that in report studio, the region name will be popped out insted of the ID.  It would be okay for me, if I have to write down manually, what names each ID should get.  Or, is there any possibility in Report Studio to configure, that the "Tooltipps" should take the caption column from the data source(from my dimension region).

Thank you very much.

Regards,

Ratna