Siebel 8.1.1.11 - browser script SWEAlert - not supported?

 HiBrowser scripts on applets are not executed if there is the SWEAlert function used, is it deprecated in 8.1.1.11(was working fine in 8.1.1.10)?

Tried both

  TheApplication().SWEAlert("test");

  and 

  theApplication().SWEAlert("test");

 alert("test"); works fine.

Tested in High Interactivity, Internet Explorer 8

Regards,

Alex