GetAccountNum

integer getAccountNum(object PlayerObject);

getAccountNum returns the account number of a player object (character). If no valid player object was provided then the function will return 0. Normally, the Avatar character has a fixed account number of 2130706433.

For "UoDemo+, Publish 14 and upwards" Server Operators you can use the following pseudo-check to detect yourself (if you didn't override the account number that is):

if( getAccountNum( player_to_check ) == 2130706433 )
{
  systemMessage("I am the one running UoDemo+, Publish 14.");
}