Index: ActiviteitenOpvolging/ActiviteitenOpvolging/domain/managers/implementations/EmployeeManager.vb
===================================================================
diff -u -r1723 -r1735
--- ActiviteitenOpvolging/ActiviteitenOpvolging/domain/managers/implementations/EmployeeManager.vb	(.../EmployeeManager.vb)	(revision 1723)
+++ ActiviteitenOpvolging/ActiviteitenOpvolging/domain/managers/implementations/EmployeeManager.vb	(.../EmployeeManager.vb)	(revision 1735)
@@ -68,6 +68,9 @@
             Throw New Exception($"An employee was already chosen for number (index): {employeeNumber}.")
         End If
 
+        'Update the employeeNumber in the employee.
+        employee.Number = employeeNumber
+
         'Add employee to dictionary of selected employees -> set the value according to an employee number.
         _selectedEmployeesDictionary.Item(employeeNumber) = employee
     End Sub
@@ -80,6 +83,10 @@
             'The employee was not selected, thus can't be deselected.
             Throw New Exception("Cannot remove the selection of a non-selected employee.")
         End If
+
+        'Update the employee number of the employee.
+        _selectedEmployeesDictionary.Item(employeeNumber).Number = -1
+
         'Remove the employee -> set the value back to 'Nothing'.
         _selectedEmployeesDictionary.Item(employeeNumber) = Nothing
     End Sub