diff --git a/libs/piqt_utils/pivaluetree_edit.cpp b/libs/piqt_utils/pivaluetree_edit.cpp
index 3e67ac8..a6fa061 100644
--- a/libs/piqt_utils/pivaluetree_edit.cpp
+++ b/libs/piqt_utils/pivaluetree_edit.cpp
@@ -411,6 +411,14 @@ PIValueTreeEdit * PIValueTreeEdit::addTreeEdit(const PIValueTree & vt) {
 }
 
 
+PIValueTreeEdit * PIValueTreeEdit::rootTreeEdit() {
+	PIValueTreeEdit * ret = this;
+	while (ret->parent_tree)
+		ret = ret->parent_tree;
+	return ret;
+}
+
+
 void PIValueTreeEdit::addValueEdit(const PIValueTree & vt) {
 	auto * ve = new PIVariantEdit();
 	applyVariantEdit(ve, vt);
@@ -458,7 +466,19 @@ void PIValueTreeEdit::createTabWidget() {
 
 
 void PIValueTreeEdit::newRequest(NewType type) {
-	PIString nn = Q2PIString(QInputDialog::getText(nullptr, tr("New item"), tr("Input new name:")));
+	PIString nn;
+	if (rootTreeEdit()->allowed_names && (type == NewType::Value)) {
+		QStringList anl = PI2QStringList(rootTreeEdit()->allowed_names());
+		if (anl.isEmpty()) {
+			QMessageBox::warning(nullptr, tr("New item"), tr("No allowed names!"));
+			return;
+		}
+		bool ok = false;
+		nn      = Q2PIString(QInputDialog::getItem(nullptr, tr("New item"), tr("Select new name:"), anl, 0, false, &ok));
+		if (!ok) return;
+	} else {
+		nn = Q2PIString(QInputDialog::getText(nullptr, tr("New item"), tr("Input new name:")));
+	}
 	if (nn.isEmpty()) return;
 	for (const auto & c: current.children()) {
 		if (c.name() == nn) {
@@ -469,6 +489,9 @@ void PIValueTreeEdit::newRequest(NewType type) {
 	PIValueTree vt;
 	vt.setName(nn);
 	if (type == NewType::Value) {
+		if (rootTreeEdit()->value_by_name) {
+			vt.setValue(rootTreeEdit()->value_by_name(nn));
+		}
 		if (!widget_params->showFor(vt)) return;
 	}
 	if (type == NewType::Array) {
diff --git a/libs/piqt_utils/pivaluetree_edit.h b/libs/piqt_utils/pivaluetree_edit.h
index 1409231..26673db 100644
--- a/libs/piqt_utils/pivaluetree_edit.h
+++ b/libs/piqt_utils/pivaluetree_edit.h
@@ -61,6 +61,9 @@ public:
 	bool isFullEditMode() const { return is_full_edit; }
 	void setFullEditMode(bool yes);
 
+	void setAllowedNamesFunction(std::function<PIStringList()> f) { allowed_names = f; }
+	void setValueForNameFunction(std::function<PIVariant(PIString)> f) { value_by_name = f; }
+
 	void rollback();
 	void clear();
 	void retranslate();
@@ -80,6 +83,7 @@ private:
 	void actionTriggered(QToolButton * button, const PIString & vn, QAction * a);
 	void newRequest(NewType type);
 	PIValueTreeEdit * addTreeEdit(const PIValueTree & vt);
+	PIValueTreeEdit * rootTreeEdit();
 	void addValueEdit(const PIValueTree & vt);
 	void applyArrayAttributes();
 	QLabel * newLabel(const PIValueTree & vt);
@@ -137,6 +141,8 @@ private:
 	Grouping cur_grouping = Parent, real_grouping = Indent;
 	mutable PIValueTree source, current;
 	bool is_full_edit = false;
+	std::function<PIStringList()> allowed_names;
+	std::function<PIVariant(PIString)> value_by_name;
 };