Embedded Event Manager - Default Route

Here is a EEM Scenario Question:

Provide a solution that provides failover capabilities from the primary link to the backup link and failback capabilities from the backup link to the primary link. You must send a syslog message stating "Failed over to the Backup Link" during failover and a syslog message "Failed Back to the Primary Link" when failing back.

Requirements:
- You cannot use IP SLA
- You cannot use dynamic routing on R1
- You cannot modify the current routing configuration on R2 and R4
- You cannot use static floating routes on R1

Embedded Event Manager - Interface - No Shut

event manager applet F0/1
 event syslog pattern "Interface FastEthernet0/1, changed state to down"
 action 1.0 cli command "enable"
 action 1.1 cli command "config terminal"
 action 1.2 cli command "interface fas 0/1"
 action 1.3 cli command "no shut"
 action 9.5 syslog msg "FastEthernet0/1 is UP leveraging EEM"


Note: I cannot get EEM running properly with Dynamips. You can test EEM one of two ways - You can generate the event by shutting down the interface or set the event to none "event none" and then run the "event manger run" command. "event manager run F0/1"

Update: I have got this to work Dynamips using 3660 Version 12.4(15)T14