Dofus-ws.sh

#!/bin/bash
#Dofus Window Switcher
#Usage: With no parameters, attempts to switch to a flashing dofus window. 
#With a parameter, switch to the window with that title

if [ -z $1 ] ; then
  for id in `xdotool search --class "Dofus"`; do
  	xprop -id $id | grep "The urgency hint bit is set" > /dev/null 2>&1
  	if [ "$?" = "0" ]; then
      wmctrl -i -a $id
  		exit 0
  	fi
  done
fi

if [ ! -z $1 ] ; then
  xdotool search --name $1 windowactivate
  exit 0
fi

exit 1

Where do i need to set the keybind? How can i run this code ? any help ?