[rules-users] effective dates at package level

[hongyu lu]

Is it possible to specify effective dates at package level instead of per rule based? 

We would like to organize rules by package and manage at that
level. e.g., enable/disable all rules of a particular package as a
whole. 

I tried to mimic it with package global variable, but it
doesn't look like you can assign a value to a global variable at
declaration? 

thanks 
Jeff