Identify unavailable area on EU model into the HMI

advanced/hmi/nspanel_eu_code/boot.txt

@@ -15,6 +15,7 @@ Page boot
             dim=100
             covx baud,baud_rate.txt,0,0
             baud_rate.txt+=" bps"
+            vis unavailable,0
         
         Postinitialize Event
             sendme
@@ -145,6 +146,16 @@ Text framework
         Text               : 
         Max. Text Size     : 10
     
+Text unavailable
+    Attributes
+        ID                 : 16
+        Scope              : local
+        Dragging           : 0
+        Send Component ID  : disabled
+        Associated Keyboard: none
+        Text               : 
+        Max. Text Size     : 1
+    
 Dual-state Button bt_reboot
     Attributes
         ID               : 4