Hi @Kev51 VST ,
why not keep it simple like this?
$a = Read-Host "Pour ajouter l utilisateur dans le groupe PRODUCTION ECRITURE entrer 1 sinon entrer 0"
Set-ADUser -Identity bsimard -Add @{"msDS-cloudExtensionAttribute1" = "$a"}
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(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten