Redmine

I have the impression this section of the API documentation needs update:

issue = Issue.new(
  :subject => 'REST API',
  :assigned_to_id => 1,
  :project_id => 1,
  :custom_field_values => {2 => 'Fixed'}
 )

I'm not a Ruby guru but I have the impression it should be:

:custom_field_values => {'2' => 'Fixed'}