Hi Joel, and thank you for your awnser !

Its a good begining, but what I have to do is a bit more difficult.

Excuse me for my misexplanation.

My files are not all in the directory 'MyDir'.
There are a lot of subdirectories, with various names convention.

I need a function that recursively find the file location with a filter
function.
Exemple : cell A1 contains "A-ZER-TY"
the file to link to is in
\MyDir\projetct\projectblablabla\AZERTY.APJ
I need to put a link in B1 to this file
And so from A1 to Ax.

But I like to thank you a lot for your awnser.
It's a nice begining for me and I will try to work on it to improve your
function.

If anyone have others suggestions, you are welcome !

Best regards,

Matthieu