I did another tests with an other word file containing buttons with VBA codes. If i save the document with my 2013 version (and probably with the 2007 version) and when another user try to open the file with the 2010 version, the buttons stop working.... It's not a problem with my file but it's seams to be a problem of compatibility of versions....

Why??
Any ideas who to solved the problem...?

Thanks again,

Bouclesdor