@budduke
Thank you, i think I have to add your mod.
@fermachado
you are right, your side works.
My one do not.
I added the flag counter and this image can be shared on facebook, and sometime one or to more.
But most no others, even if the counter is higher, no tumbhnails are shown.
I think i have to add the code from above, but do not like to add it to every side, every image by myself.