diff --git a/rslib/i18n/build/extract.rs b/rslib/i18n/build/extract.rs
index f28c43d58..eee5ba0b8 100644
--- a/rslib/i18n/build/extract.rs
+++ b/rslib/i18n/build/extract.rs
@@ -165,9 +165,11 @@ impl From<String> for Variable {
             | "kilobytes" | "daysStart" | "daysEnd" | "days" | "secs-per-card" | "remaining"
             | "hourStart" | "hourEnd" | "correct" => VariableKind::Int,
             "average-seconds" | "cards-per-minute" => VariableKind::Float,
-            "val" | "found" | "expected" | "part" | "percent" | "day" => VariableKind::Any,
+            "val" | "found" | "expected" | "part" | "percent" | "day" | "number" | "up"
+            | "down" | "seconds" | "megs" => VariableKind::Any,
             term => {
-                if term.ends_with("Count") || term.ends_with("Secs") {
+                let term = term.to_ascii_lowercase();
+                if term.ends_with("count") {
                     VariableKind::Int
                 } else {
                     VariableKind::String
diff --git a/rslib/i18n/build/write_strings.rs b/rslib/i18n/build/write_strings.rs
index 219080a03..5b15fe99d 100644
--- a/rslib/i18n/build/write_strings.rs
+++ b/rslib/i18n/build/write_strings.rs
@@ -7,7 +7,7 @@ use inflections::Inflect;
 use std::{fmt::Write, fs, path::PathBuf};
 
 use crate::{
-    extract::{Module, Translation},
+    extract::{Module, Translation, VariableKind},
     gather::{TranslationsByFile, TranslationsByLang},
 };
 
@@ -31,9 +31,8 @@ pub fn write_strings(map: &TranslationsByLang, modules: &[Module]) {
 fn write_methods(modules: &[Module], buf: &mut String) {
     buf.push_str(
         r#"
-use crate::I18n;
-use crate::tr_args;
-use fluent::FluentValue;
+use crate::{I18n,Number};
+use fluent::{FluentValue, FluentArgs};
 use std::borrow::Cow;
 
 impl I18n {
@@ -46,12 +45,15 @@ impl I18n {
             let doc = translation.text.replace("\n", " ");
             let in_args;
             let out_args;
+            let var_build;
             if translation.variables.is_empty() {
                 in_args = "".to_string();
                 out_args = ", None".to_string();
+                var_build = "".to_string();
             } else {
                 in_args = build_in_args(translation);
-                out_args = build_out_args(translation);
+                var_build = build_vars(translation);
+                out_args = ", Some(args)".to_string();
             }
 
             writeln!(
@@ -60,6 +62,7 @@ impl I18n {
     /// {doc}
     #[inline]
     pub fn {func}<'a>(&'a self{in_args}) -> Cow<'a, str> {{
+{var_build}
         self.translate("{key}"{out_args})
     }}"#,
                 func = func,
@@ -67,6 +70,7 @@ impl I18n {
                 doc = doc,
                 in_args = in_args,
                 out_args = out_args,
+                var_build = var_build,
             )
             .unwrap();
         }
@@ -75,19 +79,35 @@ impl I18n {
     buf.push_str("}\n");
 }
 
-fn build_out_args(translation: &Translation) -> String {
-    let v: Vec<_> = translation
-        .variables
-        .iter()
-        .map(|var| {
-            format!(
-                r#""{fluent_name}"=>{rust_name}"#,
-                fluent_name = var.name,
-                rust_name = var.name.to_snake_case()
+fn build_vars(translation: &Translation) -> String {
+    if translation.variables.is_empty() {
+        "let args = None;\n".into()
+    } else {
+        let mut buf = String::from(
+            r#"
+        let mut args = FluentArgs::new();
+"#,
+        );
+        for v in &translation.variables {
+            let fluent_name = &v.name;
+            let rust_name = v.name.to_snake_case();
+            let trailer = match v.kind {
+                VariableKind::Any => "",
+                VariableKind::Int | VariableKind::Float => ".into()",
+                VariableKind::String => ".into()",
+            };
+            writeln!(
+                buf,
+                r#"        args.set("{fluent_name}", {rust_name}{trailer});"#,
+                fluent_name = fluent_name,
+                rust_name = rust_name,
+                trailer = trailer,
             )
-        })
-        .collect();
-    format!(", Some(tr_args![{}])", v.join(", "))
+            .unwrap();
+        }
+
+        buf
+    }
 }
 
 fn build_in_args(translation: &Translation) -> String {
@@ -95,13 +115,13 @@ fn build_in_args(translation: &Translation) -> String {
         .variables
         .iter()
         .map(|var| {
-            // let kind = match var.kind {
-            //     VariableKind::Int => "i64",
-            //     VariableKind::Float => "f64",
-            //     VariableKind::String => "&str",
-            //     VariableKind::Any => "&str",
-            // };
-            let kind = "impl Into<FluentValue<'a>>";
+            let kind = match var.kind {
+                VariableKind::Int => "impl Number",
+                VariableKind::Float => "impl Number",
+                VariableKind::String => "impl Into<String>",
+                // VariableKind::Any => "&str",
+                _ => "impl Into<FluentValue<'a>>",
+            };
             format!("{}: {}", var.name.to_snake_case(), kind)
         })
         .collect();
diff --git a/rslib/i18n/src/lib.rs b/rslib/i18n/src/lib.rs
index fc3762979..38a1fd49d 100644
--- a/rslib/i18n/src/lib.rs
+++ b/rslib/i18n/src/lib.rs
@@ -3,7 +3,7 @@
 
 mod generated;
 
-use fluent::{FluentArgs, FluentResource, FluentValue};
+use fluent::{types::FluentNumber, FluentArgs, FluentResource, FluentValue};
 use fluent_bundle::bundle::FluentBundle as FluentBundleOrig;
 use num_format::Locale;
 use serde::Serialize;
@@ -17,6 +17,14 @@ type FluentBundle<T> = FluentBundleOrig<T, intl_memoizer::concurrent::IntlLangMe
 
 pub use fluent::fluent_args as tr_args;
 
+pub trait Number: Into<FluentNumber> {}
+impl Number for i32 {}
+impl Number for i64 {}
+impl Number for u32 {}
+impl Number for f32 {}
+impl Number for u64 {}
+impl Number for usize {}
+
 fn remapped_lang_name(lang: &LanguageIdentifier) -> &str {
     let region = match &lang.region {
         Some(region) => Some(region.as_str()),