diff --git a/utshell-0.5/Cargo.toml b/utshell-0.5/Cargo.toml
index eb71a8084604725d417176bfbd89f1c6bde35ea0..b4ccb0a5245cca20686efbc61ca6b989ffe48e82 100644
--- a/utshell-0.5/Cargo.toml
+++ b/utshell-0.5/Cargo.toml
@@ -98,7 +98,8 @@ members=[
  "r_variables",
  "r_arrayfunc",
  "r_error", 
- "r_expr",
+ "r_expr", 
+ "r_input",
 ]
 
 [dependencies]
@@ -177,7 +178,7 @@ members=[
  r_variables = {path = "./r_variables"}
  r_error = {path = "./r_error"}
  r_expr = {path = "./r_expr"}
-
+ r_input = {path = "./r_input"}
 
 intl_pluralrules = "7.0.2"
 tinystr = "=0.7.1"
diff --git a/utshell-0.5/r_input/Cargo.toml b/utshell-0.5/r_input/Cargo.toml
new file mode 100644
index 0000000000000000000000000000000000000000..3ecf3b51de6a794cadcbc86da0593e1d8bc777d2
--- /dev/null
+++ b/utshell-0.5/r_input/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "r_input"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/utshell-0.5/r_input/src/lib.rs b/utshell-0.5/r_input/src/lib.rs
new file mode 100644
index 0000000000000000000000000000000000000000..7d12d9af8195bf5e19d10c7b592b359ccd014149
--- /dev/null
+++ b/utshell-0.5/r_input/src/lib.rs
@@ -0,0 +1,14 @@
+pub fn add(left: usize, right: usize) -> usize {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}