diff --git a/tc/tctbzno.uml b/tc/tctbzno.uml
index a307dd8de..c4b3985d1 100755
--- a/tc/tctbzno.uml
+++ b/tc/tctbzno.uml
@@ -11,7 +11,7 @@ BEGIN
   PROMPT 1 1 "Norme Zucchetti"
 END
 
-NUMBER F_CODTAB 2
+STRING F_CODTAB 2
 BEGIN
   PROMPT 2 2 "Codice Norma "
   USE &ZNO
@@ -21,10 +21,10 @@ BEGIN
   DISPLAY "Codice Norma" S7
   OUTPUT F_CODTAB CODTAB
   OUTPUT F_DESC S0
-	CHECKTYPE REQUIRED
+  CHECKTYPE REQUIRED
   FIELD CODTAB
   VALIDATE FIXLEN_FUNC 2
-  FLAG "Z"
+  FLAGS "ZU"
   KEY 1
 END