Load balance decision based on client IP and datagroup value

I want to load balance traffic to a specific pool member based on the Source IP that is connecting to the VIP. I created the following Irule for that and a datagroup.

The datagroup contains for example the following values. So client IP 10.0.0.1 needs to be load balanced to 192.168.0.1 and the other to .2 etcetera, this also with a fallback if there is not match.

Client IP Pool member IP

10.0.0.1 192.168.0.1

10.0.0.2 192.168.0.2

Is this the correct syntax or am I missing something here?

when CLIENT_ACCEPTED {
set key [class match -name [IP::client_addr] contains Datagroup]
set value [class match -value $key contains Datagroup]

if { $value ne "" } {
pool serverpool member $value 80

} else
{
pool serverpool
}
}