Forms :: FRM-41213 / Unable To Connect To Report Server

I'm trying to catch the FRM-41213 ERROR (Unable to connect to the report server), so I can switch the generation to another report server. At runtime the message FRM-41213 appers but I'm unable to catch it using 'exception' or 'error_code'.

Here's my

begin
v_rep := run_report_object (repid, pl_id);
if err_type = 'FRM' and (err_code = '41213' or err_code = '41214') then
message('ss error catch');
end if;
exception
when others then
message('ss error to handle');
end;