Is it possible to retrieve dictionary items from within a custom component? I have a component where I send an email when a Member is created in the back office, it works fine but I want to hold some of the email content as dictionary items.

I thought the following would work but it doesn't return the items

var emailHeading = Umbraco.Web.Composing.Current.UmbracoHelper.GetDictionaryValue("Set Password Email Heading", "Set Password Email Heading..");