diff --git a/ve/ve2400.uml b/ve/ve2400.uml
index ae0bf348c..0c756210a 100755
--- a/ve/ve2400.uml
+++ b/ve/ve2400.uml
@@ -198,7 +198,7 @@ BEGIN
     FIELD LF_ANAMAG->GRMERC[1,3]
     GROUP G_GRMERC
     FLAG "U"
-    USE GMC KEY 1 SELECT CODTAB ?= "???"
+    USE GMC KEY 1 SELECT CODTAB[4,5]==""
     INPUT CODTAB F_GRMERC
     DISPLAY "Codice" CODTAB[1,3]
     DISPLAY "Descrizione@50" S0