> I need to dispaly more data near the button.

| This means you want a different string to be displayed?
 
Yes


> I have add, to the descriptionAddress definition the:
>  reference:  ( MAAddressModel descriptionCity, MAAddressModel 
> descriptionRegion)

| If so, try this

| reference: (MAContainer with: (MAStringDescription new 
| selectorAccessor: #printString; yourself))

| and implement your own printOn: method in your referenced object as 
| you wish.

I've test this solution but d'ont work.
 
The printOn: method in my referenced object is never call.
 
I work with vw7.5 and seaside 2.8a1.
 
Cheers,
Dario