diff --git a/cala-ledger/src/tx_template/entity.rs b/cala-ledger/src/tx_template/entity.rs
index 89b0c8f7..d04ea3e7 100644
--- a/cala-ledger/src/tx_template/entity.rs
+++ b/cala-ledger/src/tx_template/entity.rs
@@ -372,7 +372,7 @@ mod tests {
             .code("CODE")
             .tx_input(
                 NewTxInput::builder()
-                    .effective("date('2022-11-01')")
+                    .effective("DATE('2022-11-01')")
                     .journal_id(format!("'{journal_id}'"))
                     .build()
                     .unwrap(),
diff --git a/cala-server/src/graphql/convert.rs b/cala-server/src/graphql/convert.rs
index 83925cf3..2b319b2b 100644
--- a/cala-server/src/graphql/convert.rs
+++ b/cala-server/src/graphql/convert.rs
@@ -174,14 +174,14 @@ impl From<cala_ledger::tx_template::ParamDefinition> for ParamDefinition {
 impl From<cala_ledger::tx_template::ParamDataType> for ParamDataType {
     fn from(value: cala_ledger::tx_template::ParamDataType) -> Self {
         match value {
-            cala_ledger::tx_template::ParamDataType::STRING => ParamDataType::STRING,
-            cala_ledger::tx_template::ParamDataType::INTEGER => ParamDataType::INTEGER,
-            cala_ledger::tx_template::ParamDataType::DECIMAL => ParamDataType::DECIMAL,
-            cala_ledger::tx_template::ParamDataType::BOOLEAN => ParamDataType::BOOLEAN,
-            cala_ledger::tx_template::ParamDataType::UUID => ParamDataType::UUID,
-            cala_ledger::tx_template::ParamDataType::DATE => ParamDataType::DATE,
-            cala_ledger::tx_template::ParamDataType::TIMESTAMP => ParamDataType::TIMESTAMP,
-            cala_ledger::tx_template::ParamDataType::JSON => ParamDataType::JSON,
+            cala_ledger::tx_template::ParamDataType::STRING => ParamDataType::String,
+            cala_ledger::tx_template::ParamDataType::INTEGER => ParamDataType::Integer,
+            cala_ledger::tx_template::ParamDataType::DECIMAL => ParamDataType::Decimal,
+            cala_ledger::tx_template::ParamDataType::BOOLEAN => ParamDataType::Boolean,
+            cala_ledger::tx_template::ParamDataType::UUID => ParamDataType::Uuid,
+            cala_ledger::tx_template::ParamDataType::DATE => ParamDataType::Date,
+            cala_ledger::tx_template::ParamDataType::TIMESTAMP => ParamDataType::Timestamp,
+            cala_ledger::tx_template::ParamDataType::JSON => ParamDataType::Json,
         }
     }
 }
@@ -189,14 +189,14 @@ impl From<cala_ledger::tx_template::ParamDataType> for ParamDataType {
 impl From<ParamDataType> for cala_ledger::tx_template::ParamDataType {
     fn from(value: ParamDataType) -> Self {
         match value {
-            ParamDataType::STRING => cala_ledger::tx_template::ParamDataType::STRING,
-            ParamDataType::INTEGER => cala_ledger::tx_template::ParamDataType::INTEGER,
-            ParamDataType::DECIMAL => cala_ledger::tx_template::ParamDataType::DECIMAL,
-            ParamDataType::BOOLEAN => cala_ledger::tx_template::ParamDataType::BOOLEAN,
-            ParamDataType::UUID => cala_ledger::tx_template::ParamDataType::UUID,
-            ParamDataType::DATE => cala_ledger::tx_template::ParamDataType::DATE,
-            ParamDataType::TIMESTAMP => cala_ledger::tx_template::ParamDataType::TIMESTAMP,
-            ParamDataType::JSON => cala_ledger::tx_template::ParamDataType::JSON,
+            ParamDataType::String => cala_ledger::tx_template::ParamDataType::STRING,
+            ParamDataType::Integer => cala_ledger::tx_template::ParamDataType::INTEGER,
+            ParamDataType::Decimal => cala_ledger::tx_template::ParamDataType::DECIMAL,
+            ParamDataType::Boolean => cala_ledger::tx_template::ParamDataType::BOOLEAN,
+            ParamDataType::Uuid => cala_ledger::tx_template::ParamDataType::UUID,
+            ParamDataType::Date => cala_ledger::tx_template::ParamDataType::DATE,
+            ParamDataType::Timestamp => cala_ledger::tx_template::ParamDataType::TIMESTAMP,
+            ParamDataType::Json => cala_ledger::tx_template::ParamDataType::JSON,
         }
     }
 }
diff --git a/cala-server/src/graphql/tx_template.rs b/cala-server/src/graphql/tx_template.rs
index 52ed3a14..be26dd51 100644
--- a/cala-server/src/graphql/tx_template.rs
+++ b/cala-server/src/graphql/tx_template.rs
@@ -1,5 +1,4 @@
 use async_graphql::*;
-use serde::{Deserialize, Serialize};
 
 use super::primitives::*;
 
@@ -23,16 +22,16 @@ pub(super) struct ParamDefinition {
     pub description: Option<String>,
 }
 
-#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize, Enum, Copy)]
+#[derive(Clone, Debug, PartialEq, Eq, Enum, Copy)]
 pub enum ParamDataType {
-    STRING,
-    INTEGER,
-    DECIMAL,
-    BOOLEAN,
-    UUID,
-    DATE,
-    TIMESTAMP,
-    JSON,
+    String,
+    Integer,
+    Decimal,
+    Boolean,
+    Uuid,
+    Date,
+    Timestamp,
+    Json,
 }
 
 #[derive(SimpleObject)]
diff --git a/examples/rust/src/main.rs b/examples/rust/src/main.rs
index 28389788..f3bd5325 100644
--- a/examples/rust/src/main.rs
+++ b/examples/rust/src/main.rs
@@ -1,7 +1,9 @@
 use anyhow::Context;
 use std::fs;
 
-use cala_ledger::{account::*, journal::*, migrate::IncludeMigrations, query::*, *};
+use cala_ledger::{
+    account::*, journal::*, migrate::IncludeMigrations, query::*, tx_template::*, *,
+};
 
 pub fn store_server_pid(cala_home: &str, pid: u32) -> anyhow::Result<()> {
     create_cala_dir(cala_home)?;
@@ -52,7 +54,46 @@ async fn main() -> anyhow::Result<()> {
         .description("description")
         .build()?;
     let journal = cala.journals().create(new_journal).await?;
-    println!("journal_id: {}", journal.id());
+    let journal_id = journal.id();
+    println!("journal_id: {}", journal_id);
+
+    let tx_input = NewTxInput::builder()
+        .journal_id(format!("UUID('{}')", journal_id))
+        .effective("DATE('2022-11-01')")
+        .build()?;
+    let entries = vec![
+        NewEntryInput::builder()
+            .entry_type("'TEST_DR'")
+            .account_id("param.recipient")
+            .layer("'SETTLED'")
+            .direction("'DEBIT'")
+            .units("1290")
+            .currency("'BTC'")
+            .build()
+            .unwrap(),
+        NewEntryInput::builder()
+            .entry_type("'TEST_CR'")
+            .account_id("param.sender")
+            .layer("'SETTLED'")
+            .direction("'CREDIT'")
+            .units("1290")
+            .currency("'BTC'")
+            .build()
+            .unwrap(),
+    ];
+    let tx_template_id = TxTemplateId::new();
+
+    let new_tx_template = NewTxTemplate::builder()
+        .id(tx_template_id)
+        .code("CODE")
+        .tx_input(tx_input)
+        .entries(entries)
+        .build()
+        .unwrap();
+    let tx_template = cala.tx_templates().create(new_tx_template).await?;
+    println!("tx_template_id: {}", tx_template.id());
+    let code = tx_template.into_values().code;
+    println!("tx_template_code: {}", code);
 
     loop {
         tokio::time::sleep(std::time::Duration::from_secs(5)).await;