diff --git a/README.md b/README.md
index 609e52c..d783e81 100644
--- a/README.md
+++ b/README.md
@@ -14,8 +14,9 @@ zabbixlaunch is a application that take control over a launchpad mini, and draw
   "server": "https://zabbix.acme.com/api_jsonrpc.php",
   "username": "bob",
   "password": "password",
-  "authtoken": "token",
-  "limit": 20
+  "sloweffect": true,
+  "refresh": 2,
+  "limit": 100
 }
 ```
 
@@ -48,7 +49,7 @@ cargo build --release
 ## License
 
 ```text
-Copyright (c) 2021 PaulBSD
+Copyright (c) 2021, 2022 PaulBSD
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/config.json.sample b/config.json.sample
new file mode 100644
index 0000000..28cbeb0
--- /dev/null
+++ b/config.json.sample
@@ -0,0 +1,8 @@
+{
+  "server": "https://zabbix.acme.com/api_jsonrpc.php",
+  "username": "bob",
+  "password": "password",
+  "sloweffect": true,
+  "refresh": 2,
+  "limit": 100
+}
\ No newline at end of file
diff --git a/src/padcontrol/mod.rs b/src/padcontrol/mod.rs
index 9d5cd58..d050458 100644
--- a/src/padcontrol/mod.rs
+++ b/src/padcontrol/mod.rs
@@ -81,7 +81,7 @@ fn test(ctx: &mut Context) {
 pub fn draw(canvas: &mut CanvasLayout, ctx: &mut Context) {
     println!("Refresh rate is {} seconds", ctx.cfg.refresh.unwrap());
     loop {
-        ctx.hotreload();
+        let mut max = 0;
         let zabbix_data = match get_zabbix_problems(&ctx.cfg) {
             Ok(zabbix_data) => zabbix_data,
             Err(_) => {
@@ -92,7 +92,7 @@ pub fn draw(canvas: &mut CanvasLayout, ctx: &mut Context) {
         };
         ctx.datamatrix.compute(&zabbix_data);
         clear(canvas);
-        let mut max = 0;
+
         for (i, j) in ctx.datamatrix.layout.iter().enumerate() {
             let p = Pad {
                 x: ((i as i32) % MATRIX_WIDTH),
@@ -106,15 +106,16 @@ pub fn draw(canvas: &mut CanvasLayout, ctx: &mut Context) {
                 _ => Color::GREEN,
             };
             canvas[p] = c;
-            max += 1;
-            if max >= MATRIX_SIZE {
-                break;
-            }
             if ctx.cfg.sloweffect.unwrap() {
                 sleep(Duration::from_millis(15));
             }
             canvas.flush().unwrap();
+            max += 1;
+            if max >= MATRIX_SIZE {
+                break;
+            }
         }
+        ctx.hotreload();
     }
 }
 
@@ -141,8 +142,8 @@ fn effect(canvas: &mut CanvasLayout, poller: &mut CanvasLayoutPoller) {
 }
 
 fn clear(canvas: &mut CanvasLayout) {
-    for a in 0..8 {
-        for b in 0..9 {
+    for a in 0..MATRIX_WIDTH {
+        for b in 0..MATRIX_WIDTH+1 {
             canvas[Pad { x: a, y: b }] = Color {
                 r: ZERO_COLOR,
                 g: ZERO_COLOR,
diff --git a/src/zabbix/problems.rs b/src/zabbix/problems.rs
index 27d44c3..3ae11d5 100644
--- a/src/zabbix/problems.rs
+++ b/src/zabbix/problems.rs
@@ -26,6 +26,10 @@ impl DataMatrix {
             let severity = res["priority"].as_str().unwrap().parse::<i64>().unwrap();
             self.layout.push(ZabbixProblems { status: severity });
         }
+        // test
+        /*for i in 0..1000 {
+            self.layout.push(ZabbixProblems { status: 5 });
+        }*/
     }
 }