Amazfit Watch faces

hi,
until now , i was happy with my stratos wich i bought a month ago.
But today , i wanted to install new Watch faces, so i followed rightly the instructions to do so, but even if the .wmz downloaded files appear in the folder watchface on my pc , Nothing new happen on the Watch .
i tried several times , i restarted the Watch , but only the preset watch faces are there.
the point i don't understand is that the new downloaded Watch faces files ( .wmz) appear correctly in the folder ".watchface "
I ve to say that the firmware on the Watch is updated to the last version and there is a lot of free memory.
help would be appreciated
thanks

hi,
i managed to success the operation , because i realized that the new downloaded must be pasted in the watchface folder ( WITHOUT A DOT, as clearly mentionned in the instructions) , i didn't notice that there were TWO folders named watchfaces ( but one starts with a dot !!!)
my mistake :/