Thank you for reply.
I have to admint IA was not helpful and does not help nor to learn or understand. I do really have no time to learn to code, not this year at least 
For example I absolutely don’t know what are the differnces between apple and java script.
What I can they is I have 2000 and even 3000 files encoded this way :
“Name of the company - YYYYMMDD - Objet of the file”.
