Irule maintenace page switches to another page after a time defined

Thank you for your help,

My global value indicate the first time when the all servers pool are down, then i need that value change every one that the state arrive.

if i use the global value in other Irule, i can't change it.

Have you an idea how can i have the first time when the all servers of my pool are down? i need to use this value for every VIP related to this pool of servers, (until that the state of the pool change).