diff --git a/src/document/definition.rs b/src/document/definition.rs
index a4c8156..ef7168b 100644
--- a/src/document/definition.rs
+++ b/src/document/definition.rs
@@ -295,8 +295,8 @@ impl DocDef {
         &mut self.field_names
     }
 
-    pub fn add_field(&mut self, name: Name, ftype: FieldType) {
-        let id = self.field_names.add_names([name].to_vec()).unwrap();
+    pub fn add_field(&mut self, names: Vec<Name>, ftype: FieldType) {
+        let id = self.field_names.add_names(names).unwrap();
         self.fields.insert(id, FieldSetting::new(ftype));
     }
 
@@ -418,7 +418,7 @@ mod docdefs {
         let mut docdef = DocDef::new(docname);
         let name = Name::english(Uuid::new_v4().to_string().as_str());
         let field_type = FieldType::Uuid;
-        docdef.add_field(name.clone(), field_type.clone());
+        docdef.add_field(vec![name.clone()], field_type.clone());
         let result = docdef.get_field(name).unwrap();
         match result.validate(&Uuid::new_v4().into()) {
             Ok(_) => {}
@@ -434,8 +434,8 @@ mod docdefs {
         let field2 = Name::english("field2");
         let ftype1 = FieldType::Uuid;
         let ftype2 = FieldType::StaticString;
-        docdef.add_field(field1.clone(), ftype1.clone());
-        docdef.add_field(field2.clone(), ftype2.clone());
+        docdef.add_field(vec![field1.clone()], ftype1.clone());
+        docdef.add_field(vec![field2.clone()], ftype2.clone());
         assert_eq!(docdef.get_field_type(&field1).unwrap(), &ftype1);
         assert_eq!(docdef.get_field_type(&field2).unwrap(), &ftype2);
     }
@@ -461,7 +461,7 @@ mod docdefs {
         let names = ["one", "two", "three"];
         let field_type = FieldType::StaticString;
         for name in names.iter() {
-            docdef.add_field(Name::english(name), field_type.clone());
+            docdef.add_field(vec![Name::english(name)], field_type.clone());
         }
         for name in names.iter() {
             let result = docdef.get_field(Name::english(name)).unwrap();
@@ -477,7 +477,7 @@ mod docdefs {
         let docname = Name::english("something");
         let mut docdef = DocDef::new(docname);
         let name = Name::english("defaultfunction");
-        docdef.add_field(name.clone(), FieldType::StaticString);
+        docdef.add_field(vec![name.clone()], FieldType::StaticString);
         docdef.set_default(&name, FieldType::StaticString).unwrap();
         match docdef.get_field(name).unwrap().validate(&Field::None) {
             Ok(data) => match data {
@@ -507,7 +507,7 @@ mod docdefs {
         let docname = Name::english("something");
         let mut docdef = DocDef::new(docname);
         let name = Name::english("defaultvalue");
-        docdef.add_field(name.clone(), FieldType::Uuid);
+        docdef.add_field(vec![name.clone()], FieldType::Uuid);
         match docdef.set_default(&name, "fred") {
             Ok(data) => unreachable!("got {:?}, should be an error", data),
             Err(err) => match err.get_error_ids().back().unwrap() {
diff --git a/src/document/session.rs b/src/document/session.rs
index 04812e2..f26795f 100644
--- a/src/document/session.rs
+++ b/src/document/session.rs
@@ -20,30 +20,46 @@ impl Session {
     pub fn doc_names() -> Vec<Name> {
         let mut names = Vec::new();
         names.push(Name::english("session"));
+        names.push(Name::japanese("セッション"));
+        names
+    }
+
+    pub fn id_field_names() -> Vec<Name> {
+        let mut names = Vec::new();
+        names.push(Name::english("id"));
+        names.push(Name::japanese("身元"));
+        names
+    }
+
+    pub fn expire_field_names() -> Vec<Name> {
+        let mut names = Vec::new();
+        names.push(Name::english("expire"));
+        names.push(Name::japanese("期限切れ"));
         names
     }
 
     pub fn document_definition() -> DocDef {
+        let name_id = Self::id_field_names()[0].clone();
+        let name_expire = Self::expire_field_names()[0].clone();
+
         let mut docdef = DocDef::with_names(Self::doc_names());
 
         let mut calc = Calculation::new(Operand::Add);
         calc.add_value(FieldType::DateTime).unwrap();
         calc.add_value(Duration::from_hours(1)).unwrap();
 
-        let name_id = Name::english("id");
-        docdef.add_field(name_id.clone(), FieldType::Uuid);
+        docdef.add_field(Self::id_field_names(), FieldType::Uuid);
         docdef.set_default(&name_id, FieldType::Uuid).unwrap();
         docdef.add_index(&name_id, IndexType::Unique).unwrap();
 
-        let name_expire = Name::english("expire");
-        docdef.add_field(name_expire.clone(), FieldType::DateTime);
+        docdef.add_field(Self::expire_field_names(), FieldType::DateTime);
         docdef.set_default(&name_expire, calc.clone()).unwrap();
         docdef.add_index(&name_expire, IndexType::Index).unwrap();
 
         let mut update = Update::new(Session::doc_names()[0].clone());
         update
             .get_values_mut()
-            .add_field(name_expire.clone(), calc.clone());
+            .add_field(Self::expire_field_names()[0].clone(), calc.clone());
         let path = Path::new(
             Include::All,
             Include::Just(Session::doc_names()[0].clone().into()),
@@ -59,7 +75,7 @@ impl Session {
             .add_value(CalcValue::Existing(FieldType::DateTime))
             .unwrap();
         delete_calc.add_value(FieldType::DateTime).unwrap();
-        delete_qry.add(name_expire.clone(), delete_calc);
+        delete_qry.add(Self::expire_field_names()[0].clone(), delete_calc);
         let delete_func = DocFuncType::Trigger(delete.into());
         docdef.add_route(Clock::get_path(), delete_func);
 
diff --git a/tests/add_test.rs b/tests/add_test.rs
index f756f62..37d34cf 100644
--- a/tests/add_test.rs
+++ b/tests/add_test.rs
@@ -21,7 +21,7 @@ fn can_new_documents_be_added() {
         data.insert(i.into());
     }
     let mut docdef = DocDef::new(doc_name.clone());
-    docdef.add_field(field_name.clone(), FieldType::Integer);
+    docdef.add_field(vec![field_name.clone()], FieldType::Integer);
     mtt.create_document(docdef);
     for item in data.iter() {
         let mut add = Addition::new(doc_name.clone());
diff --git a/tests/support.rs b/tests/support.rs
index e8fd937..6ed7c71 100644
--- a/tests/support.rs
+++ b/tests/support.rs
@@ -32,7 +32,7 @@ impl TestDocument {
         let mut fnames = Vec::new();
         for i in 0..fields.len() {
             let name = Name::english(format!("field{}", i).as_str());
-            docdef.add_field(name.clone(), fields[i].clone());
+            docdef.add_field(vec![name.clone()], fields[i].clone());
             fnames.push(name);
         }
         Self {
diff --git a/tests/trigger_test.rs b/tests/trigger_test.rs
index c2d8f54..2c4d541 100644
--- a/tests/trigger_test.rs
+++ b/tests/trigger_test.rs
@@ -1,8 +1,8 @@
 mod support;
 
 use morethantext::{
-    Action, CalcValue, Calculation, Delete, DocFuncType, FieldType, Include, MoreThanText, Name,
-    Operand, Path, Query, TestMoreThanText, Update,
+    Action, Addition, CalcValue, Calculation, Delete, DocDef, DocFuncType, FieldType, Include,
+    MoreThanText, Name, Operand, Path, Query, TestMoreThanText, Update,
 };
 use support::TestDocument;
 
@@ -168,3 +168,61 @@ fn can_a_trigger_from_another_document_be_used() {
         selected.into()
     );
 }
+
+#[test]
+fn can_triggers_work_with_multiple_languages() {
+    let initial_data = 1;
+    let doc_names = vec![Name::english("test"), Name::japanese("テスト")];
+    let field_names = vec![Name::english("something"), Name::japanese("何か")];
+    let mut docdef = DocDef::with_names(doc_names.clone());
+    docdef.add_field(field_names.clone(), FieldType::Integer);
+    let mut calc = Calculation::new(Operand::Add);
+    calc.add_value(CalcValue::Existing(FieldType::Integer))
+        .unwrap();
+    calc.add_value(1).unwrap();
+    let mut update = Update::new(doc_names[0].clone());
+    update.add_field(field_names[0].clone(), calc);
+    let path = Path::new(
+        Include::All,
+        Include::Just(doc_names[0].clone().into()),
+        Include::Just(Action::OnQuery),
+    );
+    let function = DocFuncType::ExistingQuery(update.into());
+    docdef.add_route(path, function);
+    let mut test_env = TestMoreThanText::new();
+    let mut mtt = test_env.get_morethantext();
+    mtt.create_document(docdef).unwrap();
+    let mut data = Addition::new(doc_names[0].clone());
+    data.add_field(field_names[0].clone(), initial_data.clone());
+    mtt.records(data).unwrap();
+    let mut qry_calc = Calculation::new(Operand::LessThan);
+    qry_calc.add_value(0).unwrap();
+    qry_calc
+        .add_value(CalcValue::Existing(FieldType::Integer))
+        .unwrap();
+    let path = Path::new(
+        Include::All,
+        Include::Just(doc_names[0].clone().into()),
+        Include::Just(Action::OnUpdate),
+    );
+    test_env.register_channel(vec![path]);
+    for i in 0..doc_names.len() {
+        let holder: i128 = i.clone().try_into().unwrap();
+        let mut query = Query::new(doc_names[i].clone());
+        query.add(field_names[i].clone(), qry_calc.clone());
+        let qry_result = mtt.records(query.clone()).unwrap();
+        assert_eq!(qry_result.len(), 1, "got {:?} from {:?}", qry_result, query);
+        let qry_rec = qry_result.iter().last().unwrap();
+        assert_eq!(
+            qry_rec.get(field_names[i].clone()).unwrap(),
+            (initial_data + holder).into()
+        );
+        let onupdate = test_env.get_trigger_records(Action::OnUpdate);
+        assert_eq!(onupdate.len(), 1, "got {:?}", onupdate);
+        let on_rec = onupdate.iter().last().unwrap();
+        assert_eq!(
+            on_rec.get(field_names[i].clone()).unwrap(),
+            (initial_data + holder + 1).into()
+        );
+    }
+}