Wan Load balancing for Internet + MPLS links

Hello,

I've query about configuring WAN load balancing + fail-over for Internet + MPLS (data) links

Device - 200B (16 Ports) in HA configured running with v5.2.4,build688 (GA)

I wanted to configure load balance both links + fail-over

requirement is as follow - @ active-active + fail-over

Internet - Traffic flow 50+50 and if 1 link goes down then 2nd will carry the load (port8 and port9)

MPLS - Traffic flow 50+50 and if 1 link goes down then 2nd will carry the load (port10 and port11)

For Internet below configuration is fine for me.

http://cookbook.fortinet.com/redundant-internet-connections/

But I confuse to configure MPLS links, I mean how it will be configured active + active cum fail-over, as wan-load-balance interface would be single only and that would use for Internet.

Please help me out in this.