diff --git a/README.md b/README.md
index 56c6ac6..98a92e2 100644
--- a/README.md
+++ b/README.md
@@ -199,4 +199,4 @@ GOTO label
 | 12      | Failed to open archive                      | Make sure the story file is a zip archive.                                              |
 | 13      | Unable to setup the characters hashmap.     | Make sure the characters.json file exists, is valid JSON and contains valid characters. |
 | 14      | Unable to read the main story file.         | Make sure the story.ha file exists and is readable.                                     |
-| 15      |                                             |                                                                                         |
+| 15      | Unable to tokenise data                     | Make sure your code is correctly formatted                                              |
diff --git a/server/Cargo.lock b/server/Cargo.lock
index e873a43..870c4ab 100644
--- a/server/Cargo.lock
+++ b/server/Cargo.lock
@@ -462,6 +462,7 @@ dependencies = [
  "env_logger",
  "log",
  "serde",
+ "serde-patch",
  "serde_json",
  "tokio",
  "warp",
@@ -969,6 +970,16 @@ dependencies = [
  "serde_derive",
 ]
 
+[[package]]
+name = "serde-patch"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ba8dcbff6509fa9394810d943e0e9d486a4256c23f6fcea8a58865fbe8260c4"
+dependencies = [
+ "serde",
+ "serde_json",
+]
+
 [[package]]
 name = "serde_core"
 version = "1.0.228"
diff --git a/server/Cargo.toml b/server/Cargo.toml
index 5e67b23..f01156e 100644
--- a/server/Cargo.toml
+++ b/server/Cargo.toml
@@ -26,6 +26,7 @@ unwrap_used = "warn"
 env_logger = "0.11.10"
 log = "0.4.29"
 serde = { version = "1.0.228", features = ["derive"] }
+serde-patch = "0.2.3"
 serde_json = "1.0.149"
 tokio = { version = "1.51.0", features = ["rt-multi-thread","macros"] }
 warp = { version = "0.4.2", features = ["server"] }
diff --git a/server/src/character.rs b/server/src/character.rs
index 47996f9..b4a4a70 100644
--- a/server/src/character.rs
+++ b/server/src/character.rs
@@ -7,6 +7,7 @@ use crate::{
 	info,
 	Deserialize,
 	Serialize,
+	apply_mut,
 	Mutex,
 	Arc,
 };
@@ -27,7 +28,7 @@ pub struct Character
 	torso_shape: String,
 	arm_shape: String,
 	leg_shape: String,
-	hair_color: String,
+	hair_color: String, // TODO RGB enum
 	clothing: Clothing,
 }
 #[derive(Debug,Deserialize,Serialize,Clone,Default)]
@@ -39,30 +40,11 @@ pub struct Clothing
 	shoes: String,
 }
 impl Character {
-	// Big ass ugly function because rust doesn't support referencing struct entries by string
-	pub fn set_field(&mut self, field: &str, value: &str) -> Result<(), ()> {
-		match field {
-			"name" =>				self.name = value.to_string(),
-			"gender" =>				self.gender = value.to_string(),
-			"eye_color" =>			self.eye_color = value.to_string(),
-			"pronoun_subject" =>	self.pronoun_subject = value.to_string(),
-			"pronoun_object" =>		self.pronoun_object = value.to_string(),
-			"pronoun_deppos" =>		self.pronoun_deppos = value.to_string(),
-			"pronoun_indpos" =>		self.pronoun_indpos = value.to_string(),
-			"pronoun_reflex" =>		self.pronoun_reflex = value.to_string(),
-			"head_shape" =>			self.head_shape = value.to_string(),
-			"hair_style" =>			self.hair_style = value.to_string(),
-			"torso_shape" =>		self.torso_shape = value.to_string(),
-			"arm_shape" =>			self.arm_shape = value.to_string(),
-			"leg_shape" =>			self.leg_shape = value.to_string(),
-			"hair_color" =>			self.hair_color = value.to_string(),
-			"clothing.top" =>		self.clothing.top = value.to_string(),
-			"clothing.bottom" =>	self.clothing.bottom = value.to_string(),
-			"clothing.shoes" =>		self.clothing.shoes = value.to_string(),
-
-			_ => return Err(()),
-		}
-
+	// Big ass ugly match case
+	pub fn set_field(&mut self, field: &str, value: &str) -> Result<(), String> {
+		let patch = format!("{{ \"{field}\": \"{value}\" }}");
+		apply_mut(self, patch)
+			.map_err(|_| "Invalid field".to_string())?;
 		Ok(())
 	}
 }
diff --git a/server/src/main.rs b/server/src/main.rs
index 6d93a06..daccc71 100644
--- a/server/src/main.rs
+++ b/server/src/main.rs
@@ -27,6 +27,7 @@ use serde::
 	Serialize
 };
 use serde_json::json;
+use serde_patch::apply_mut;
 use zip::
 {
 	ZipArchive,
@@ -51,17 +52,9 @@ async fn main()
 			exit(10);
 		});
 	let file = File::open(format!("../stories/{file_name}")) // Get the file
-		.unwrap_or_else
-		(|err| {
-			error!("Failed to open file: {err}");
-			exit(11);
-		});
+		.unwrap_or_exit("Failed to read file.", 11);
 	let mut archive = ZipArchive::new(file) // Open the archive
-		.unwrap_or_else
-		(|err| {
-			error!("Failed to open archive: {err}");
-			exit(12);
-		});
+		.unwrap_or_exit("Failed to open archive", 12);
 	// Setup the characters hashmap which will store each character in it as a Character struct
 	let characters = match character::character_parse(&mut archive)
 	{
@@ -102,11 +95,7 @@ async fn main()
 	// Read the file and split it into tokens
 	// file read from a zip file /story.ha
 	let mut story_file = archive.by_name("story.ha")
-		.unwrap_or_else
-		(|err| {
-			error!("Unable to read story file: {err}");
-			exit(14);
-		});
+		.unwrap_or_exit("Unable to read story file", 14);
 	let mut file_contents = String::new();
 	story_file.read_to_string(&mut file_contents)
 		.unwrap_or_else
@@ -121,11 +110,13 @@ async fn main()
 	{
 		warn!("No END statement, story may exit unexpectedly");
 	}
-	let (tokens, labels,_) = tokenise::tokenise(&space_seperated, 0).unwrap();
+	let (tokens, labels,_) = tokenise::tokenise(&space_seperated, 0)
+		.unwrap_or_exit("Unable to tokenise data", 15);
 	debug!("{tokens:?}");
 	let data_clone2 = Arc::clone(&data_to_send);
 	let characters_clone2 = Arc::clone(&characters);
 	// Run the parsing process for the DSL 
+	info!("DSL parsing begun");
 	match parsing::token_parse(&tokens, &characters_clone2, &data_clone2, &rx)
 	{
 		// Exit with error or success
diff --git a/server/src/parsing.rs b/server/src/parsing.rs
index fdf14aa..ad11fe5 100644
--- a/server/src/parsing.rs
+++ b/server/src/parsing.rs
@@ -20,13 +20,12 @@ mod character_parse;
 // Parse the tokens in a file
 // Returns success or an error string
 pub fn token_parse(
-	tokens: &Vec<tokenise::Token>,
+	tokens: &[tokenise::Token],
 	characters: &Arc<Mutex<HashMap::<String, character::Character>>>,
 	data_to_send: &Arc<Mutex<api::DataToSend>>,
 	rx: &Receiver<(bool,usize,String)>,
 ) -> Result<(),String>
 {
-	info!("DSL parsing begun");
 	let mut index: usize = 0;
 	if rx.recv().is_err()
 	{
diff --git a/server/src/parsing/character_parse.rs b/server/src/parsing/character_parse.rs
index 143b785..b07d5cd 100644
--- a/server/src/parsing/character_parse.rs
+++ b/server/src/parsing/character_parse.rs
@@ -20,7 +20,7 @@ use crate::
 pub fn character_parse
 (
 	index: usize,
-	tokens: &Vec<tokenise::Token>,
+	tokens: &[tokenise::Token],
 	character_name: String,
 	characters: &Arc<Mutex<HashMap::<String, character::Character>>>,
 	data_to_send: &Arc<Mutex<api::DataToSend>>,
@@ -44,7 +44,7 @@ pub fn character_parse
 			let output = tokenise::get_string_token(tokens, sum_index)
 				.map_err(|err| (err, index))?;
 			debug!("Saying {output}");
-			api::modify_data(data_to_send, "output".to_string(), output.to_string(), character_name, vec![]);
+			api::modify_data(data_to_send, "output".to_string(), output, character_name, vec![]);
 		},
 		// Change the property of the selected character eg @tim CHANGE name "Bill Buffins"
 		// will change the character with ID tim to "Bill Buffins"; a character's ID cannot change
@@ -71,7 +71,7 @@ pub fn character_parse
 			sum_index += 1;
 			let content = tokenise::get_string_token(tokens, sum_index)
 				.map_err(|err| (err, index))?;
-			api::modify_data(data_to_send, token.to_lowercase(), content.to_string(), character_name, vec![]);
+			api::modify_data(data_to_send, token.to_lowercase(), content, character_name, vec![]);
 		},
 		// Catch all condition, if the instruction is unrecognised as a
 		// character command
diff --git a/server/src/tokenise.rs b/server/src/tokenise.rs
index 5cc74ea..8fdcef9 100644
--- a/server/src/tokenise.rs
+++ b/server/src/tokenise.rs
@@ -6,28 +6,27 @@ use crate::
 #[derive(Debug, Clone)]
 pub enum Token
 {
-    Null,
     String(String),
-    Object(Vec<Token>),
+    Object(Vec<Self>),
 }
 
-pub fn get_string_token(tokens: &Vec<Token>, index: usize)
+pub fn get_string_token(tokens: &[Token], index: usize)
 -> Result<String, String>
 {
 	match tokens.get(index) {
-		Some(Token::String(s)) => return Ok(s.clone()),
-		Some(_) => return Err("Unexpected token".to_string()),
-		None => return Err("File unexpectedly reached termination point".to_string()),
+		Some(Token::String(s)) => Ok(s.clone()),
+		Some(_) => Err("Unexpected token".to_string()),
+		None => Err("File unexpectedly reached termination point".to_string()),
 	}
 }
 
-pub fn get_object_token(tokens: &Vec<Token>, index: usize)
+pub fn get_object_token(tokens: &[Token], index: usize)
 -> Result<&Vec<Token>, String>
 {
 	match tokens.get(index) {
-		Some(Token::Object(v)) => return Ok(v),
-		Some(_) => return Err("Unexpected token".to_string()),
-		None => return Err("File unexpectedly reached termination point".to_string()),
+		Some(Token::Object(v)) => Ok(v),
+		Some(_) => Err("Unexpected token".to_string()),
+		None => Err("File unexpectedly reached termination point".to_string()),
 	}
 }
 
@@ -42,19 +41,19 @@ pub fn tokenise(space_seperated: &Vec<&str>, mut index: usize)
 	while index < space_seperated.len()
 	{
 		let mut item = space_seperated[index].to_string();
-		let mut object: Vec<Token>;
-		if item.starts_with("\"")
+		let object: Vec<Token>;
+		if item.starts_with('"') // TODO support '
 		{
-			(index, item) = match tokenise_string(&space_seperated, index)
+			(index, item) = match tokenise_string(space_seperated, index)
 			{
-				Some((index,item)) => (index, item),
+				Some((index,item)) => (index,item),
 				None => exit(1),
 			};
 			tokenised_data.push(Token::String(item));
 		}
 		else if item == "{"
 		{
-			(object, labels, index) = match tokenise(&space_seperated, index+1) // !WARNING! recursive call
+			(object, labels, index) = match tokenise(space_seperated, index+1) // !WARNING! recursive call
 			{
 				Ok((object,labels,index)) => (object,labels,index),
 				Err(err) => return Err(err),
@@ -68,10 +67,10 @@ pub fn tokenise(space_seperated: &Vec<&str>, mut index: usize)
 		else { tokenised_data.push(Token::String(item)); }
 		index += 1;
 	}
-	return Ok((tokenised_data, labels, 0));
+	Ok((tokenised_data, labels, 0))
 }
 
-fn tokenise_string(space_seperated: &Vec<&str>, mut index: usize)
+fn tokenise_string(space_seperated: &[&str], mut index: usize)
 -> Option<(usize, String)>
 {
 	let mut string = String::new();
@@ -80,18 +79,15 @@ fn tokenise_string(space_seperated: &Vec<&str>, mut index: usize)
 	string += chars.as_str();
 	for item in &space_seperated[index+1..]
 	{
-		if item.ends_with("\"")
+		if item.ends_with('"')
 		{
 			let mut chars = item.chars();
 			chars.next_back();
 			string += format!(" {}", chars.as_str()).as_str();
-			break
-		}
-		else
-		{
-			string += format!(" {}", item).as_str();
+			return Some((index+1,string))
 		}
+		string += format!(" {item}").as_str();
 		index += 1;
 	}
-	return Some((index+1,string))
+	None
 }
diff --git a/server/src/traits.rs b/server/src/traits.rs
index c1b42e0..91dda8e 100644
--- a/server/src/traits.rs
+++ b/server/src/traits.rs
@@ -4,6 +4,8 @@ use crate::
 	exit,
 };
 
+// TODO support Options
+// TODO pass error message back
 pub trait UnwrapOrExit<T>
 {
 	fn unwrap_or_exit(self, error_message: &str, error_code: i32) -> T;
diff --git a/stories/story.ha b/stories/story.ha
index 677b1be..298181a 100644
--- a/stories/story.ha
+++ b/stories/story.ha
@@ -1,5 +1,6 @@
 @tim says "hello world, it's a good day"
 @tim change name "Timothy Fineshooter"
+@tim change boop "Timothy Fineshooter"
 @tim to fr
 choice "choice numero uno" {
 	@tim animate wave
diff --git a/stories/test.zip b/stories/test.zip
index 37dd0d4..3070a5f 100644
Binary files a/stories/test.zip and b/stories/test.zip differ