Want to use data group list instead of ip address

How would I change the following rule to use a data group list instead of specific IP addresses?

 

 

when HTTP_REQUEST {

 

if { [IP::addr [IP::client_addr] equals 164.16.1.1] } {

 

pool f89devl}

 

elseif { [IP::addr [IP::client_addr] equals 164.16.1.2] } {

 

pool f89devl}

 

else

 

{HTTP::redirect "https://outage.vccs.edu"}

 

}