Dictionary variables in VMware playbook

I am trying to via a survey in AAP for the enduser to put in say “dev app” for network variable. This translates to where network value gets put in 12.0.0.0/24 so it gets the next IP in that vlan and also populates the vm network variable to pull “12 Network” This works if just putting in the vlan and network but most of end-users won’t know which vlan they need.