How to both display the Code & Name of a Dimension ?

Hello again! 
What you should probably do is create a new property in the dimension where you concatenate the Code & Name. And then use that property as the new displayname. 

More info here: 

Hi ​@Matthieu Wallet ,

Step 1: In the “Business area” dimension, you’d need to create a property with formula:

'Business Area'.Code & " | " & 'Business Area'.Name

Step 2:  In the table, you can do the following steps:

• Hover over to the row header in the table
• Click on the dropdown
• Click on the “Update Header Label”
• Select the property name (which contains the concatenated name)