fix error

app/views/utable_export/export.xlsx.axlsx

@@ -18,6 +18,10 @@ wb.add_worksheet(name: "Structure") do |sheet|
 				row1 << column.key
 				row2 << column.type + "-#{locale}"
 			end
+		when "integer"
+			row << column.title
+			row1 << column.key
+			row2 << column.type
 		when "editor"
 			site_in_use_locales.sort.each do |locale|
 				row << column.title + " - " + t(locale.to_s)
@@ -52,6 +56,8 @@ wb.add_worksheet(name: "Structure") do |sheet|
 				site_in_use_locales.sort.each do |locale|
 					row << (column.text_translations[locale.to_s] rescue "")
 				end
+			when "integer"
+				row << column.number
 			when "editor"
 				site_in_use_locales.sort.each do |locale|
 					row << (column.content_translations[locale.to_s] rescue "")