A keying mistake

app/models/dmsf_mailer.rb

@@ -55,7 +55,7 @@ class DmsfMailer < Mailer
     redmine_headers 'Project' => project.identifier if project
     @body = email_params[:body]
     @links_only = email_params[:links_only] == '1'
-    @public_url = email_params[:public_urls] == '1'
+    @public_urls = email_params[:public_urls] == '1'
     @expired_at = email_params[:expired_at]
     @folders = email_params[:folders]
     @files = email_params[:files]

app/views/dmsf_mailer/send_documents.html.erb

@@ -65,7 +65,7 @@
     <% JSON.parse(@files).each do |id| %>
       <% file = DmsfFile.find_by_id id %>
       <% if file && !files.include?(file) %>
-        <% if @public_url %>
+        <% if @public_urls %>
           <% dmsf_public_url = DmsfPublicUrl.new %>
           <% dmsf_public_url.dmsf_file = file %>
           <% dmsf_public_url.user = User.current %>