Update derived TFT files

advanced/hmi/nspanel_CJK_eu_code/cover.txt

@@ -34,13 +34,6 @@ Variable (string) coversetting
         Text          : 
         Max. Text Size: 255
     
-Variable (string) back_page
-    Attributes
-        ID            : 12
-        Scope         : local
-        Text          : home
-        Max. Text Size: 15
-    
 Text battery_value
     Attributes
         ID                 : 1
@@ -172,7 +165,7 @@ Button cover_stop
         
 Button button_back
     Attributes
-        ID               : 13
+        ID               : 12
         Scope            : local
         Dragging         : 0
         Send Component ID: on press and release
@@ -182,26 +175,11 @@ Button button_back
     
     Events
         Touch Press Event
-            if(back_page.txt=="buttonpage01")
-            {
-                page buttonpage01
-            }else if(back_page.txt=="buttonpage02")
-            {
-                page buttonpage02
-            }else if(back_page.txt=="buttonpage03")
-            {
-                page buttonpage03
-            }else if(back_page.txt=="buttonpage04")
-            {
-                page buttonpage04
-            }else
-            {
-                page home
-            }
+            page back_page_id
         
 Timer wakeup_timer
     Attributes
-        ID         : 14
+        ID         : 13
         Scope      : local
         Period (ms): 100
         Enabled    : yes