Master toggle and nested pools?

Ok, so I am not sure how global variables work in F5. How do I call $static::pool in other iRules and then what is the scope of that variable? So long as it is active under the VirtualServer will all iRules inherit/understand the value given to static::pool?

 

 

So my thinking is under the virtual server I have an iRule:

 

 

root@ve10:Active] config b rule GlobalSwitch list

 

rule GlobalSwitch {

 

when RULE_INIT {

 

set static::pool A

 

}

 

 

Then in say all of my 100 other various other iRules I can say?

 

 

when HTTP_REQUEST {

 

if { ([HTTP::host] matches "www.siteabc.com")} {

 

pool /Common/pool_Ruby_$static::pool

 

}

 

}

 

 

And they will inherit the value given in the above "GlobalSwitch" iRule?

 

Am I understanding correctly?

 

 

Do I even need to bind the global variable iRule to anything? This:

 

https://devcentral.f5.com/wiki/irules.RULE_INIT.ashx

 

leads me to believe that I just need to define it and not bind it to anything.

 

 

Thanks!