diff --git a/MainWindow.axaml b/MainWindow.axaml
index 2ca5aa2..837d596 100644
--- a/MainWindow.axaml
+++ b/MainWindow.axaml
@@ -118,37 +118,37 @@
                             </Grid>
                             <Grid ColumnDefinitions="*,3*">
                                 <Label  Content="Name"></Label>
-                                <TextBox Grid.Column="1" x:Name="TbSportName" TextChanged="TbStudentID_OnTextChanged"></TextBox>
+                                <TextBox Grid.Column="1" x:Name="TbSportName" TextChanged="TbSportName_OnTextChanged"></TextBox>
                             </Grid>
                             
                             <Grid ColumnDefinitions="*,3*">
                                 <Label  Content="Maximale Schüler*innenanzahl"></Label>
-                                <NumericUpDown Grid.Column="1" x:Name="NudSportMaxStudents"></NumericUpDown>
+                                <NumericUpDown Grid.Column="1" x:Name="NudSportMaxStudents" ValueChanged="NudSportMaxStudents_OnValueChanged"></NumericUpDown>
                             </Grid>
                             
                             <Grid ColumnDefinitions="*,3*">
                                 <Label  Content="Minimale Schüler*innenanzahl"></Label>
-                                <NumericUpDown Grid.Column="1" x:Name="NudSportMinStudents"></NumericUpDown>
+                                <NumericUpDown Grid.Column="1" x:Name="NudSportMinStudents" ValueChanged="NudSportMinStudents_OnValueChanged"></NumericUpDown>
                             </Grid>
                             
                             <Grid ColumnDefinitions="*,3*">
                                 <Label  Content="Anzahl Angebote Semester 1"></Label>
-                                <NumericUpDown Grid.Column="1" x:Name="NudAmountCoursesSem1"></NumericUpDown>
+                                <NumericUpDown Grid.Column="1" x:Name="NudAmountCoursesSem1" ValueChanged="NudAmountCoursesSem1_OnValueChanged"></NumericUpDown>
                             </Grid>
                             
                             <Grid ColumnDefinitions="*,3*">
                                 <Label  Content="Anzahl Angebote Semester 2"></Label>
-                                <NumericUpDown Grid.Column="1" x:Name="NudAmountCoursesSem2"></NumericUpDown>
+                                <NumericUpDown Grid.Column="1" x:Name="NudAmountCoursesSem2" ValueChanged="NudAmountCoursesSem2_OnValueChanged"></NumericUpDown>
                             </Grid>
                             
                             <Grid ColumnDefinitions="*,3*">
                                 <Label  Content="Anzahl Angebote Semester 3"></Label>
-                                <NumericUpDown Grid.Column="1" x:Name="NudAmountCoursesSem3"></NumericUpDown>
+                                <NumericUpDown Grid.Column="1" x:Name="NudAmountCoursesSem3" ValueChanged="NudAmountCoursesSem3_OnValueChanged"></NumericUpDown>
                             </Grid>
                             
                             <Grid ColumnDefinitions="*,3*">
                                 <Label  Content="Anzahl Angebote Semester 4"></Label>
-                                <NumericUpDown Grid.Column="1" x:Name="NudAmountCoursesSem4"></NumericUpDown>
+                                <NumericUpDown Grid.Column="1" x:Name="NudAmountCoursesSem4" ValueChanged="NudAmountCoursesSem4_OnValueChanged"></NumericUpDown>
                             </Grid>
                             
                             <Grid ColumnDefinitions="*,3*">
@@ -156,7 +156,7 @@
                                 <StackPanel Grid.Column="1" Orientation="Vertical">
                                     <Grid ColumnDefinitions="*,50">
                                         <ComboBox Height="35" HorizontalAlignment="Stretch" x:Name="CbAlternativCourse"></ComboBox>
-                                        <Button Grid.Column="1" Margin="0,10,0,0" x:Name="BtnAlternativeCourseAdd" VerticalAlignment="Top" Height="35" HorizontalAlignment="Stretch" Click="BtnImportDefaultCourses_OnClick" HorizontalContentAlignment="Center">
+                                        <Button Grid.Column="1" Margin="0,10,0,0" x:Name="BtnAlternativeCourseAdd" VerticalAlignment="Top" Height="35" HorizontalAlignment="Stretch" Click="BtnAlternativeCourseAdd_OnClick" HorizontalContentAlignment="Center">
                                             <StackPanel Orientation="Horizontal">
                                                 <LucideIcon Kind="Plus" Width="24" Height="24" />
                                             </StackPanel>
@@ -175,8 +175,8 @@
                                 <Label  Content="Alternativbezeichnungen"></Label>
                                 <StackPanel Grid.Column="1" Orientation="Vertical">
                                     <Grid ColumnDefinitions="*,50">
-                                        <TextBox Grid.Column="0" Height="35" HorizontalAlignment="Stretch" x:Name="TbSportAlternativeName" TextChanged="TbStudentID_OnTextChanged"></TextBox>
-                                        <Button Grid.Column="1" Margin="0,10,0,0" x:Name="BtnAlternativeNameAdd" VerticalAlignment="Top" Height="35" HorizontalAlignment="Stretch" Click="BtnImportDefaultCourses_OnClick" HorizontalContentAlignment="Center">
+                                        <TextBox Grid.Column="0" Height="35" HorizontalAlignment="Stretch" x:Name="TbSportAlternativeName"></TextBox>
+                                        <Button Grid.Column="1" Margin="0,10,0,0" x:Name="BtnAlternativeNameAdd" VerticalAlignment="Top" Height="35" HorizontalAlignment="Stretch" Click="BtnAlternativeNameAdd_OnClick" HorizontalContentAlignment="Center">
                                             <StackPanel Orientation="Horizontal">
                                                 <LucideIcon Kind="Plus" Width="24" Height="24" />
                                             </StackPanel>
diff --git a/MainWindow.axaml.cs b/MainWindow.axaml.cs
index c0c2bf8..70971e7 100644
--- a/MainWindow.axaml.cs
+++ b/MainWindow.axaml.cs
@@ -258,4 +258,79 @@ public partial class MainWindow : Window
             }
         }
     }
+
+    private void TbSportName_OnTextChanged(object? sender, TextChangedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).Name = TbSportName.Text;
+        } catch {}
+    }
+
+    private void NudSportMaxStudents_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).MaxStudents = Convert.ToInt32(NudSportMaxStudents.Value);
+        } catch {}
+    }
+
+    private void NudSportMinStudents_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).MinStudents = Convert.ToInt32(NudSportMinStudents.Value);
+        } catch {}
+    }
+
+    private void NudAmountCoursesSem1_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).Semester[0] = Convert.ToInt32(NudAmountCoursesSem1.Value);
+        } catch {}
+    }
+
+    private void NudAmountCoursesSem2_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).Semester[1] = Convert.ToInt32(NudAmountCoursesSem2.Value);
+        } catch {}
+    }
+
+    private void NudAmountCoursesSem3_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).Semester[2] = Convert.ToInt32(NudAmountCoursesSem3.Value);
+        } catch {}
+    }
+
+    private void NudAmountCoursesSem4_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).Semester[3] = Convert.ToInt32(NudAmountCoursesSem4.Value);
+        } catch {}
+    }
+
+    private void BtnAlternativeCourseAdd_OnClick(object? sender, RoutedEventArgs e)
+    {
+        try
+        {
+            //((Sport)LbSportCourses.SelectedItem).AlternativeNames.Add(TbSportAlternativeName.Text);
+            //TbSportAlternativeCourse.Text = "";
+        } catch {}
+    }
+
+    private void BtnAlternativeNameAdd_OnClick(object? sender, RoutedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).AlternativeNames.Add(TbSportAlternativeName.Text);
+            LbAlternativeNames.Items.Add(TbSportAlternativeName.Text);
+            TbSportAlternativeName.Text = "";
+        } catch {}
+    }
 }
\ No newline at end of file