diff --git a/libs/ardour/ardour/triggerbox.h b/libs/ardour/ardour/triggerbox.h
index 8c0003310a..29eac5ea3b 100644
--- a/libs/ardour/ardour/triggerbox.h
+++ b/libs/ardour/ardour/triggerbox.h
@@ -346,6 +346,7 @@ class LIBARDOUR_API TriggerBox : public Processor
 	int set_state (const XMLNode&, int version);
 
 	int set_from_path (uint64_t slot, std::string const & path);
+	int set_from_selection (uint64_t slot, boost::shared_ptr<Region>);
 
 	DataType data_type() const { return _data_type; }
 
diff --git a/libs/ardour/triggerbox.cc b/libs/ardour/triggerbox.cc
index 080a1d1bb4..684d769b88 100644
--- a/libs/ardour/triggerbox.cc
+++ b/libs/ardour/triggerbox.cc
@@ -1285,6 +1285,16 @@ TriggerBox::get_next_trigger ()
 	return 0;
 }
 
+int
+TriggerBox::set_from_selection (uint64_t slot, boost::shared_ptr<Region> region)
+{
+	if (slot >= all_triggers.size()) {
+		return 0;
+	}
+
+	return all_triggers[slot]->set_region (region);
+}
+
 int
 TriggerBox::set_from_path (uint64_t slot, std::string const & path)
 {