diff --git a/src/ve/velib03a.cpp b/src/ve/velib03a.cpp
index aac40efef..5ae72b15b 100755
--- a/src/ve/velib03a.cpp
+++ b/src/ve/velib03a.cpp
@@ -615,9 +615,9 @@ int TExpr_documento::parse_user_func(const char * name, int nparms) const
   if (strcmp(name, "NRATE") == 0)
     return nparms == 0 ? _nrate : -1;
 	if (strcmp(name, "QTACONAI") == 0)
-		return nparms >= 1 && nparms < 3 ? _qtaconai : -1;
+		return nparms >= 1 && nparms < 4 ? _qtaconai : -1;
 	if (strcmp(name, "VALCONAI") == 0)
-		return nparms >= 1 && nparms < 3 ? _valconai : -1;
+		return nparms >= 1 && nparms < 4 ? _valconai : -1;
 	return -1;
 }    
 
@@ -1068,12 +1068,11 @@ void TExpr_documento::evaluate_user_func(int index, int nparms, TEval_stack & st
       break;
 		case _qtaconai:
 		{
-			int sp = stack.count();
-			int tipo_calcolo = (nparms > 1) ? (int)stack.pop_real().integer() : 0;
-			TString cat = stack.pop_string();
+			const int ndec = (nparms > 2) ? (int)stack.pop_real().integer() : 5;
+			const int tipo_calcolo = (nparms > 1) ? (int)stack.pop_real().integer() : 0;
+			const TString cat = stack.pop_string();
 
-			if (stack.count() >= sp - 2)
-				stack.push(ZERO);
+			stack.push(ZERO);
 
 			real & val = stack.peek_real();
 
@@ -1107,7 +1106,7 @@ void TExpr_documento::evaluate_user_func(int index, int nparms, TEval_stack & st
 
 						val *= (perc_esenz / CENTO);
 				}
-				val.round(5);
+				val.round(ndec);
 			}
 			else
 				val = ZERO;
@@ -1115,13 +1114,12 @@ void TExpr_documento::evaluate_user_func(int index, int nparms, TEval_stack & st
 		break;
 		case _valconai:
 		{
-			int sp = stack.count();
-			int tipo_calcolo = (nparms > 1) ? (int)stack.pop_real().integer() : 0;
-			TString cat = stack.pop_string();
+			const int ndec = (nparms > 2) ? (int)stack.pop_real().integer() : 5;
+			const int tipo_calcolo = (nparms > 1) ? (int)stack.pop_real().integer() : 0;
+			const TString cat = stack.pop_string();
 			TString_array sottocat_found;
 
-			if (stack.count() >= sp - 2)
-				stack.push(ZERO);
+			stack.push(ZERO);
 
 			real & val = stack.peek_real();
 
@@ -1135,7 +1133,7 @@ void TExpr_documento::evaluate_user_func(int index, int nparms, TEval_stack & st
 					{
 						sottocat_found.add(sottocat);
 						stack.push(sottocat);
-						stack.push(tipo_calcolo);
+						stack.push(tipo_calcolo);						
 						evaluate_user_func(_qtaconai, 2, stack, type);
 
 						real valqta = stack.pop_real();
@@ -1155,7 +1153,7 @@ void TExpr_documento::evaluate_user_func(int index, int nparms, TEval_stack & st
 										const real prezzo = rdoc.get_real(RDOC_PREZZO);
 
 										val = valqta * prezzo;
-										val.round(5);
+										val.round(ndec);
 										break;
 									}