What should I put in "New limit value" field?

Hi! We currently have 5 Elastic IPs. I am trying to request 1 additional Elastic IP to have a total of 6. However, I am confused as to what I should put in the "New limit value". I'm afraid that if I put "1", our EIP will be reduced to just 1. Or if I put "6", we will end up with a total of 11 EIP (5+6). Sorry for my ignorant question and thank you for answering. :)