diff --git a/src/pages/eventDetail/eventDetail.jsx b/src/pages/eventDetail/eventDetail.jsx
index ac3a780..5ee109d 100644
--- a/src/pages/eventDetail/eventDetail.jsx
+++ b/src/pages/eventDetail/eventDetail.jsx
@@ -4,6 +4,7 @@ import { useParams } from "react-router";
 import getEventById from "../../utils/event/getEventById.js";
 import { formatDateLetter } from "../../utils/date/formatDateLetter.js";
 import Button from "../../components/ui/button/button.jsx";
+import assign from "../../utils/tasks/assign.js";
 
 
 function EventDetail() {
@@ -20,11 +21,16 @@ function EventDetail() {
         }) ()
     }, [])
 
+    const handleRegisterBtn = async (eventId) => {
+        console.log(eventId);
+        await assign(eventId);
+    }
+
     return (
         <div className={styles.allContent}>
             <div className={`glassCard`}>
                 <div className={styles.textImage}>
-                    <img src="/public/icons/theme/dark.svg" alt="Illustration événement" className={styles.eventImage}/>
+                    <img src="/icons/theme/dark.svg" alt="Illustration événement" className={styles.eventImage}/>
                     <div className={styles.eventInfo}>
                         <h2>{event?.name}</h2>
                         <p>{event && formatDateLetter(event.start)}</p>
@@ -42,8 +48,7 @@ function EventDetail() {
                                     <p className={styles.taskDate}> {event && formatDateLetter(task.start)} - {event && formatDateLetter(task.end)} </p>
                                     <p>{task.description}</p>
                                 </div>
-
-                                <Button> {task.registered ? "Se désinscrire" : "S’inscrire"} </Button>
+                                <Button onClick={() => handleRegisterBtn(task.id)}> S’inscrire </Button>
                             </div>
                         </li>
                     ))}
diff --git a/src/utils/tasks/assign.js b/src/utils/tasks/assign.js
new file mode 100644
index 0000000..413dc71
--- /dev/null
+++ b/src/utils/tasks/assign.js
@@ -0,0 +1,32 @@
+import getXSRFToken from "../getXSRF.js";
+
+
+export default async function assign(taskId) {
+
+    const csrfToken = await getXSRFToken();
+
+    try {
+        const res = await fetch(`http://${import.meta.env.VITE_API_URL}/api/events/task/assign`, {
+            method: 'POST',
+            credentials: 'include',
+            headers: {
+                'Accept': 'application/json',
+                'Content-Type': 'application/json',
+                'X-XSRF-TOKEN': csrfToken,
+            },
+            body: JSON.stringify({
+                task_id: taskId
+            }),
+        });
+
+        if (!res.ok) {
+            throw new Error(`Erreur serveur : ${res.status}`);
+        }
+
+        const data = await res.json();
+        return data;
+    } catch (err) {
+        console.error('Erreur :', err);
+        return null;
+    }
+}
\ No newline at end of file