Rollovertips Show custom information

Hy,

we have in the groupcode 1002 of the polylines information stored.
z.B. "E-Y2Y\n--4x50SM" oder "2xE-AY2Y\n--4x150SE\n1xE-AY2Y\n--4x1120RM"

Currently we have a lisp-routine to recall the information per "alert"-command.
The output looks like this:
2xE-AY2Y
--4x150SE
1xE-AY2Y
--4x1120RM

Is there a way to show the information from den groupcode 1002 in the rollovertip?
I would like to get the information without to call a command.

Thanks