Show empty columns in datacube

Hi,

I am facing a problem with my datacube, i hope you can help me on this.

I have a datasource which is a csv file. In the csv file (and in my dataset so) one of the columns is "Region" which is corresponding to a location like 'US' or 'UK'. Others column can be dates or clients name.

So i have created a computed column to determine what is the geographic zone of each client/region:

(computed column name : 'type region')

Quote

Everything is ok for the moment. When a client is from UK, the "type region" computed column is correctly displaying 'Europe'.

Then, i have created a datacube, in my groups (dimensions) i have : "Type region" and below 'Region'. As a summary field a count of all clients.

So, my reports looks like :

        |      America      |       Europe       |
        |   US    |   SA    |   CE    |    UK    |
Row     | (count) | (count) | (count) |  (count) |

But, if there is no client in the region 'SA', then the column is not displayed. I want to display it.
When i am checking in my crosstab options "Empty Rows/Columns" -> Show empty columns, then the behavior is strange, look what i have :

        |                   America              |                 Europe                 |
        |   US    |   SA    |   CE    |    UK    |   US    |   SA    |   CE    |    UK    |
Row     | (count) | (count) | (count) |  (count) | (count) | (count) | (count) |  (count) |

Is there any way to force BIRT to show all columns but in the right place ?

I have tried the option "Show if blank" in crosstab advanced options instead, but no change.

Do you have an idea ?

Using BIRT 4.2.1
Thanks