diff --git a/ve/ve2400.uml b/ve/ve2400.uml
index 38dd1d5d8..b6e59cb6b 100755
--- a/ve/ve2400.uml
+++ b/ve/ve2400.uml
@@ -215,7 +215,7 @@ STRING F_GRMERCD1 50
 BEGIN
     PROMPT 23 5 ""
     GROUP G_GRMERC
-    USE GMC KEY 2 SELECT CODTAB ?= "???"
+    USE GMC KEY 2 SELECT CODTAB[4,5]==""
     INPUT S0 F_GRMERCD1
     DISPLAY "Codice" CODTAB
     DISPLAY "Descrizione@50" S0