Invalid value in dnsrecord

My computer is hosting an apache2 server and everyone can access it by typing my external IP address and port that I had enabled forwarding in in the url bar (xx.xx.xxx.xx:8080). I also have a freenom (public DNS resolver) domain ready. In the freenom domain DNS management it asks for a type (which I figured out is just A) and a TTL which I don't know. Then there is the target which should be an IP address but when I type xx.xx.xxx.xx:8080 it says Invalid value in dnsrecord. What do I do?