Oops, you are so right Victor, it is:
$s_severity_enum_string = '10:feature,30:text,50:minor,60:major,70:crash,80:block';
$s_status_enum_string = '10:new,20:feedback,50:assigned,80:resolved,90:closed';
made the mistake in copy/paste to the forum.
Great application and thanks for monitoring.