IBM MaaS360 Security Modeling Rule

/*-------------------------------
   ----------- RULES -------------
   ------------------------------- */
[RULE: ibm_maas360_map_common_event_fields]
alter
    ipv4 = if(IP_Address ~= "\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}",IP_Address ,null),
    ipv6 = if(IP_Address ~= "^((?:[a-fA-F\d]{0,4}\:){2,7}[a-fA-F\d]{0,4})$",IP_Address ,null),
    xdm.event.type = source_log_type;
/*-----------------------------------------
  ------------ MODELING RULES -------------
  ----------------------------------------- */
[MODEL: dataset = "ibm_maas360_security_raw"]
//Modeling Rules -> Admin changes audit 
 filter source_log_type = "admin_changes_audit"
| call ibm_maas360_map_common_event_fields
| alter
    is_added = if(len(Roles_Added) = 0 , null, Roles_Added),
    is_deleted = if(len(Roles_Deleted) = 0 , null, Roles_Deleted)
| alter
    temp_added_description = if(is_added != null,concat("The user was added to role '",is_added,"'"), null),
    temp_deleted_description = if(is_deleted != null,concat("The user was removed from role '", is_deleted,"'"),null),
    temp_added_deleted_description = if(is_added != null and is_deleted != null, concat("The user was added to a role '", is_added , "' and ", "was removed from '",is_deleted,"'" ))
| alter 
    xdm.source.user.username = Performed_By,
    xdm.source.identity.username = Performed_By,
    xdm.event.operation = Operation_Type,
    xdm.source.ipv4 = ipv4,
    xdm.source.ipv6 = ipv6,
    xdm.target.user.upn = E_mail,
    xdm.target.identity.upn = E_mail,
    xdm.target.user.username = Username,
    xdm.target.identity.username = Username,
    xdm.target.user.first_name = First_Name,
    xdm.target.identity.first_name = First_Name,
    xdm.target.user.middle_name = Middle_Name,
    xdm.target.identity.middle_name = Middle_Name,
    xdm.target.user.last_name = Last_Name,
    xdm.target.identity.last_name = Last_Name,
    xdm.event.description = coalesce(temp_added_deleted_description,temp_deleted_description,temp_added_description);
//Modeling Rules -> Admin login report
filter source_log_type = "admin_login_report"
| call ibm_maas360_map_common_event_fields
| alter
    xdm.source.user.username = Username,
    xdm.source.identity.username = Username,
    xdm.source.ipv4 = ipv4,
    xdm.source.ipv6 = ipv6,
    xdm.event.outcome = if(Auth_Status = "Successful", XDM_CONST.OUTCOME_SUCCESS, Auth_Status = "User Authentication Failed" or Auth_Status = "Device Authentication Failed", XDM_CONST.OUTCOME_FAILED, Auth_Status = null, null, to_string(Auth_Status)),
    xdm.source.host.os = Operating_System,
    xdm.network.http.browser = Browser_Version;