In version 6.48.7 in webfig you cannot enter 60-0 in connection bytes in the firewall, “Invalid value in Connection Bytes” appears or any value, e.g. 100-0, but 0-900 and other similar ones will work. In winbox it works fine and takes the values n-0 where n is any number, also 0-n where n is any number. But webfig shows an error when I enter 90-0 and other similar ones, where the prime number, e.g. 90, is greater than the second 0. The value 90-1 will be accepted, but not 90-0
