diff --git a/CMakeLists.txt b/CMakeLists.txt
index 735fca4..18870ec 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -86,7 +86,6 @@ set_target_properties(LearnGtk4 spdlog_header_only PROPERTIES
         INTERPROCEDURAL_OPTIMIZATION ON
 )
 
-target_compile_definitions(LearnGtk4 PUBLIC $<$<CONFIG:Debug>:_GLIBCXX_DEBUG>)
 target_compile_options(LearnGtk4 PUBLIC ${COMPILE_FLAGS})
 target_link_options(LearnGtk4 PUBLIC ${LINKER_OPTIONS})
 target_link_libraries(LearnGtk4 PkgConfig::GTKMM4 spdlog_header_only BillySheet)
diff --git a/app_win_2_back.cpp b/app_win_2_back.cpp
index 5f5fab4..7d80cae 100644
--- a/app_win_2_back.cpp
+++ b/app_win_2_back.cpp
@@ -1,6 +1,8 @@
 #include "app_win_2_back.hpp"
 #include "hello_world.hpp"
 
+#include <billy_objects.hpp>
+
 #include <glibmm/miscutils.h>
 #include <gtkmm/switch.h>
 #include <spdlog/spdlog.h>
@@ -107,6 +109,28 @@ namespace gui_to_app {
             return;
         }
         // TODO: interaction avec la CharacterSheet
+        ranges::for_each(views::zip(std::array{
+                                        sword_switch,
+                                        lance_switch,
+                                        morgen_switch,
+                                        bow_switch,
+                                        chainmail_switch,
+                                        cookpot_switch,
+                                        pamphlet_switch,
+                                        medkit_switch,
+                                        fourche_switch,
+                                        dagger_switch,
+                                        rock_kit_switch,
+                                        sack_switch,
+                                    },
+                                    signal_handlers),
+                         [](const std::tuple<Gtk::Switch *, SwitchSignalHelper &> &vals) {
+                             const auto &[switch_val, signal_handle] = vals;
+                             signal_handle.switch_ = switch_val;
+                             switch_val->signal_state_set().connect(
+                                 sigc::mem_fun(signal_handle, &SwitchSignalHelper::signal_handler),
+                                 false);
+                         });
     }
 
     void AppWin2Back::on_quit() noexcept {
@@ -117,4 +141,8 @@ namespace gui_to_app {
                          });
         quit();
     }
+
+    bool AppWin2Back::switch_signal_handler(const bool flag, const character::billyEnums &obj) noexcept {
+        return flag ? gestionnaire.insert_object(sheet, obj) : !gestionnaire.erase_object(sheet, obj);
+    }
 } // gui_to_app
diff --git a/app_win_2_back.hpp b/app_win_2_back.hpp
index fdb5d21..7f950dd 100644
--- a/app_win_2_back.hpp
+++ b/app_win_2_back.hpp
@@ -1,8 +1,14 @@
 #ifndef LEARNGTK4_APP_WIN_2_BACK_HPP
 #define LEARNGTK4_APP_WIN_2_BACK_HPP
 
-#include <gtkmm/application.h>
+#include <array>
+
 #include <glibmm/refptr.h>
+#include <gtkmm/application.h>
+
+#include <billy_objects.hpp>
+#include <character_sheet.hpp>
+#include <gtkmm/switch.h>
 
 namespace learn_gtkmm4 {
     class HelloWorld;
@@ -28,8 +34,23 @@ namespace gui_to_app {
         void on_activate() final;
 
     private:
+        struct SwitchSignalHelper {
+            AppWin2Back &app;
+            const character::billyEnums obj;
+            Gtk::Switch *switch_{ nullptr };
+
+            [[nodiscard]] bool signal_handler(const bool flag) const noexcept {
+                switch_->set_state(app.switch_signal_handler(flag, obj));
+                return true;
+            }
+        };
+
+        friend struct SwitchSignalHelper;
+
         void on_quit() noexcept;
 
+        bool switch_signal_handler(bool flag, const character::billyEnums &obj) noexcept;
+
         Glib::RefPtr<Gtk::Builder> app_builder;
         learn_gtkmm4::HelloWorld *main_window{ nullptr };
         Gtk::Switch *sword_switch{ nullptr };
@@ -46,6 +67,26 @@ namespace gui_to_app {
         Gtk::Switch *dagger_switch{ nullptr };
         Gtk::Switch *rock_kit_switch{ nullptr };
         Gtk::Switch *sack_switch{ nullptr };
+
+        std::array<SwitchSignalHelper, 12> signal_handlers{
+            SwitchSignalHelper{ .app = *this, .obj = character::weapons::Sword },
+            SwitchSignalHelper{ .app = *this, .obj = character::weapons::Lance },
+            SwitchSignalHelper{ .app = *this, .obj = character::weapons::Morgenstern },
+            SwitchSignalHelper{ .app = *this, .obj = character::weapons::Bow },
+
+            SwitchSignalHelper{ .app = *this, .obj = character::equipments::Chainmail },
+            SwitchSignalHelper{ .app = *this, .obj = character::equipments::CookingPot },
+            SwitchSignalHelper{ .app = *this, .obj = character::equipments::PamphletTourist },
+            SwitchSignalHelper{ .app = *this, .obj = character::equipments::MedicKit },
+
+            SwitchSignalHelper{ .app = *this, .obj = character::tools::Fourche },
+            SwitchSignalHelper{ .app = *this, .obj = character::tools::Dagger },
+            SwitchSignalHelper{ .app = *this, .obj = character::tools::RockClimbingKit },
+            SwitchSignalHelper{ .app = *this, .obj = character::tools::SackOfGrain },
+        };
+
+        character::BillyObjects gestionnaire{};
+        character::CharacterSheet sheet{};
     };
 } // gui_to_app