You can use:
/AgentSetup/integration/publishHostName variable is set as the FQDN of the host you wish connect
For versions 9.0.00 or later, BMC PATROL Agent behavior can also be changed to publish FQDN by using: /AgentSetup/integration/useFQDNHostName variable and set its value to yes.
Note: publishHostName takes precedence over FQDNHostName
Originally BMC ProactiveNet Server was case sensitive but this was fixed in a SP from BPPM9.0 onwards from recollection. This ensured you did not get duplicate device - we reconciled to one name irrespective of the case.