Cannot crearte user properties

Hi.
I'm using DBeaver 3.5.8 under Ubuntu 3.19 to access Informix Databases. My problem is that I cannot create user properties to define the db_locale value. When I edit the connection, go to the diver properties page and click on the right button of the mouse, unlike in Windows, nothing happens. Can someone help ?
TIA
Nuno
I'm using DBeaver 3.5.8 under Ubuntu 3.19 to access Informix Databases. My problem is that I cannot create user properties to define the db_locale value. When I edit the connection, go to the diver properties page and click on the right button of the mouse, unlike in Windows, nothing happens. Can someone help ?
TIA
Nuno