There is many ways, but one way is to copy item to desktop.
#!/bin/bash
yad --width=400 --center --buttons-layout=center --borders=5 --text-align=center --title="INFO" --text="Select file for copying to your Desktop" --button=gtk-ok:1 --center
FILE=`yad --file --width=1200`
if [ $? = 0 ];
then
yad --center --width=500 --height=100 --text-align=center --text="Your selection is: $FILE"
cp $FILE "$(xdg-user-dir DESKTOP)" && yad --center --borders=5 --width=500 --text-align=center --button=gtk-ok:1 --title='READY' --buttons-layout=center
else exit 0
fi
