Problem solved already. Some cells were empty.
Sorry for this.

"François" wrote:

Hello
I have this linked to a name "Members".
=OFFSET(Historique!$A$2;;;COUNTA(Historique!$A:$A) ;COUNTA(Historique!$A$2:$AL$2))

For a reason that I do not know (a limitation ?) the range is not going to
AL column but well till column AI.

Anyone has an idea why this is the case ?

Many thanks

François