Data Modeler - Checkbox "As SYSDBA" in Oracle

DBA can connect to Oracle DB under user SYS - it's a system account, and Oracle demand that user SYS can not connect as normal user, only "as sysdba". If I enter "sys as sysdba" in username field - I got wrong username error. 

So, please add checkbox "as sysdba" to Oracle connection dialog and map this checkbox to connection properties.