diff --git a/.idea/deploymentTargetDropDown.xml b/.idea/deploymentTargetDropDown.xml
new file mode 100644
index 00000000..ed52fac2
--- /dev/null
+++ b/.idea/deploymentTargetDropDown.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="deploymentTargetDropDown">
+    <targetSelectedWithDropDown>
+      <Target>
+        <type value="QUICK_BOOT_TARGET" />
+        <deviceKey>
+          <Key>
+            <type value="VIRTUAL_DEVICE_PATH" />
+            <value value="C:\Users\82109\.android\avd\Pixel_4_API_34.avd" />
+          </Key>
+        </deviceKey>
+      </Target>
+    </targetSelectedWithDropDown>
+    <timeTargetWasSelectedWithDropDown value="2023-12-14T07:17:37.771997500Z" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index 2b723a42..e799a149 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -9,6 +9,7 @@ plugins {
     id 'com.google.gms.google-services'
     id 'com.google.android.libraries.mapsplatform.secrets-gradle-plugin'
     id 'com.google.android.gms.oss-licenses-plugin'
+    id "io.sentry.android.gradle" version "4.0.0"
 }
 
 Properties properties = new Properties()
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 637a4957..14c2938f 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -169,6 +169,33 @@
                 android:name="android.support.FILE_PROVIDER_PATHS"
                 android:resource="@xml/file_paths" />
         </provider>
+
+        <!-- Required: set your sentry.io project identifier (DSN) -->
+        <meta-data
+            android:name="io.sentry.dsn"
+            android:value="https://321f5b5bad325cb7bcd5c9a0f9346fff@o4505393164124160.ingest.sentry.io/4506393051594752" />
+
+        <!-- enable automatic breadcrumbs for user interactions (clicks, swipes, scrolls) -->
+        <meta-data
+            android:name="io.sentry.traces.user-interaction.enable"
+            android:value="true" />
+        <!-- enable screenshot for crashes -->
+        <meta-data
+            android:name="io.sentry.attach-screenshot"
+            android:value="true" />
+        <!-- enable view hierarchy for crashes -->
+        <meta-data
+            android:name="io.sentry.attach-view-hierarchy"
+            android:value="true" />
+
+        <!-- enable the performance API by setting a sample-rate, adjust in production env -->
+        <meta-data
+            android:name="io.sentry.traces.sample-rate"
+            android:value="1.0" />
+        <!-- enable profiling when starting transactions, adjust in production env -->
+        <meta-data
+            android:name="io.sentry.traces.profiling.sample-rate"
+            android:value="1.0" />
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_nickname.xml b/app/src/main/res/layout/activity_nickname.xml
index cabff398..db5ca196 100644
--- a/app/src/main/res/layout/activity_nickname.xml
+++ b/app/src/main/res/layout/activity_nickname.xml
@@ -7,6 +7,10 @@
 
         <import type="android.view.View" />
 
+        <variable
+            name="cons"
+            type="sopt.uni.presentation.common.content.ConstKt" />
+
         <variable
             name="viewModel"
             type="sopt.uni.presentation.invite.NickNameViewModel" />
@@ -88,7 +92,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginTop="4dp"
-            android:text="@{viewModel.nickName.length() + ` / 10`}"
+            android:text="@{viewModel.nickName.length() + ` / ` + cons.MAX_LENGTH}"
             android:textColor="@{viewModel.nickName.length() > 5 ?  @color/Red_500 : @color/Gray_400}"
             app:layout_constraintEnd_toEndOf="@id/et_nickname"
             app:layout_constraintTop_toBottomOf="@id/et_nickname"