diff --git a/ba/ba3700a.uml b/ba/ba3700a.uml
index 1e43d554d..67efc2363 100755
--- a/ba/ba3700a.uml
+++ b/ba/ba3700a.uml
@@ -109,6 +109,7 @@ NUMBER F_INT_RATE 3
 BEGIN
   PROMPT 49 6 "Intervallo rate "
   HELP "Giorni di intervallo tra una data e l'altra"
+  FIELD I3
   FLAGS "R"
 END