diff --git a/.gitea/workflows/test.yml b/.gitea/workflows/test.yml
index 80ad767..3444f5f 100644
--- a/.gitea/workflows/test.yml
+++ b/.gitea/workflows/test.yml
@@ -32,7 +32,7 @@ jobs:
         if: ${{ runner.os != 'Windows' }}
         run: chmod +x ./gradlew
       - name: build
-        run: ./gradlew build --no-daemon
+        run: ./gradlew build --no-daemon --max-workers 1
       #- name: test
       #  run: ./gradlew test --no-daemon
 
diff --git a/Core/src/main/java/fr/altarik/toolbox/core/data/DataTracker.java b/Core/src/main/java/fr/altarik/toolbox/core/data/DataTracker.java
new file mode 100644
index 0000000..aa9bcb9
--- /dev/null
+++ b/Core/src/main/java/fr/altarik/toolbox/core/data/DataTracker.java
@@ -0,0 +1,37 @@
+package fr.altarik.toolbox.core.data;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Objects;
+
+public class DataTracker {
+
+    private final Map<TrackedData, String> trackedData;
+
+    public DataTracker() {
+        this.trackedData = new HashMap<>();
+    }
+
+    public void startTracking(TrackedData data) {
+        trackedData.put(data, data.defaultValue());
+    }
+
+    public String getOrDefault(TrackedData data) {
+        return Objects.requireNonNull(trackedData.get(data));
+    }
+
+    public void set(TrackedData data, String value) {
+        String v = trackedData.get(data);
+        if(v != null) {
+            trackedData.putIfAbsent(data, value);
+        } else {
+            throw new IllegalArgumentException("Data " + data.name() + " is not tracked, please initialize it with DataTracker#startTracking(TrackedData, String) first");
+        }
+
+    }
+
+    public void saveToDb() {
+
+    }
+
+}
diff --git a/Core/src/main/java/fr/altarik/toolbox/core/data/TrackedData.java b/Core/src/main/java/fr/altarik/toolbox/core/data/TrackedData.java
new file mode 100644
index 0000000..c8bec33
--- /dev/null
+++ b/Core/src/main/java/fr/altarik/toolbox/core/data/TrackedData.java
@@ -0,0 +1,5 @@
+package fr.altarik.toolbox.core.data;
+
+public record TrackedData(String name, String defaultValue) {
+
+}
diff --git a/Pagination/build.gradle b/Pagination/build.gradle
deleted file mode 100644
index e69de29..0000000
diff --git a/Tasks/build.gradle b/Tasks/build.gradle
deleted file mode 100644
index e69de29..0000000
diff --git a/gradle.properties b/gradle.properties
index 16c0d2a..59d1cfe 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -8,6 +8,6 @@ loader_version=0.14.14
 fabric_version=0.75.1+1.19.3
 
 maven_group=fr.altarik.toolbox
-maven_version=4.0.0-SNAPSHOT
+maven_version=4.1.0-SNAPSHOT
 repo_username=Altarik
 repo_password=password
diff --git a/settings.gradle b/settings.gradle
index 4a814ce..c266500 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -10,4 +10,7 @@ pluginManagement {
 }
 
 rootProject.name = 'Toolbox'
-include(':Tasks', ':Database', ':Pagination', ':Core')
+include(':Tasks')
+include(':Database')
+include(':Pagination')
+include(':Core')