diff --git a/Power_Pico/User/GUI/ui_helpers.h b/Power_Pico/User/GUI/ui_helpers.h
index 90e5c2a..50467a3 100644
--- a/Power_Pico/User/GUI/ui_helpers.h
+++ b/Power_Pico/User/GUI/ui_helpers.h
@@ -22,6 +22,7 @@ void ui_full_screen_refresh(lv_obj_t * screen);
 void ui_GetElapsedTime_HMS(uint8_t *hours, uint8_t *minutes, uint8_t *seconds);
 uint8_t ui_get_back_light_level(void);
 bool ui_get_key_sound_enable(void);
+uint8_t ui_get_language_select(void);
 uint16_t ui_get_display_rotation(void);
 float ui_get_voltage(void);
 float ui_get_current(void);
@@ -30,6 +31,7 @@ float ui_get_current(void);
 
 void ui_set_back_light_level(uint8_t level);
 void ui_set_key_sound_enable(bool enable);
+void ui_set_language_select(uint8_t lang);
 void ui_set_display_rotation(uint16_t rotation);
 
 // sys save function