2WAN PCC 1xIP through the WAN1

Hello,
I configure MiroTik with the instructions :
http://wiki.mikrotik.com/wiki/Manual:PCC
and all good work but, j want forcing traffic from the LAN , eg . the address 192.168.0.55 through WAN1 .

If anyone can do it ?
Thank you in advance for your answer
Regards.