Checkout the following article in the manual and letting me know if you still have issues:
http://manual.mantisbt.org/manual.customizing.mantis.enumerations.php

$g_severity_enum_string = '11:trivial,21:tweak,31:minor,41:major,51:crash';

I have that set in my config_inc.php
I decided to add 1 to the numbers, because even when I set the new constants it still showed the same first 5

Here is the contents of my custom_constant_inc.php
<?php

    define( 'TRIVIAL',      11 );
    define( 'TWEAK',        22 );
    define( 'MINOR',        33 );
    define( 'MAJOR',        44 );
    define( 'MAJOR',        55 );

?>

which is clearly being read becuase NOW when I go to report bug it says
@11@
@21@
@31@
@41@
@51@
and isn't showing the things from the enum list listed in config_inc.php
lol and now my View Bugs list shows

@50@
@20@
@10@ etc, the old values, without any text associated

edited on: 08-15-04 20:57

You also need to change $s_severity_enum_string in a custom_strings.php file.

We need to update the documentation for this.

works good guys, thanks :)

With g_active_language in custom_strings full customisation works...

edited on: 08-15-04 23:21

$g_severity_enum_string = '11:trivial,21:tweak,31:minor,41:major,51:crash';
I have that set in my config_inc.php
And you have to mirror it for all (all !!!) languages into
custom_strings_inc.php

I can advertise again my demo-site :-) and show my custom* files to everybody

i'm also having this problem in 19.0rc1

With the fix I made for 0004448, you can cheat on the string definitions. It is possible to use the string definition for multiple languages. For example:

if ( $g_active_language == 'french' ) {

$s_severity_enum_string = '11:simple,22:cosmÈtique,31:mineur,41:majeur,51:crash';

}else{ # all other languages

$s_severity_enum_string = '11:trivial,21:tweak,31:minor,41:major,51:crash';

}

Starting 0.19.0rc1, the lang_get_current() function should be used in custom_strings_inc.php rather than $g_active_language or any previous direct access to a global variable.

Well, it works with old form yet, and - can you provide example of new form?
Instead of
if ( $g_active_language ==
I have to write
if (lang_get_current() ==

yes
?

correct.

This information has been added to the "Customizing Enumerations" section of the manual source.