diff --git a/gp-unique-id/gpuid-sequence-by-nested-forms-parent-entry.php b/gp-unique-id/gpuid-sequence-by-nested-forms-parent-entry.php
new file mode 100644
index 000000000..35e9a4e88
--- /dev/null
+++ b/gp-unique-id/gpuid-sequence-by-nested-forms-parent-entry.php
@@ -0,0 +1,18 @@
+<?php
+/**
+ * Gravity Perks // Unique ID // Unique Sequences by Nested Forms Parent Entry
+ * https://gravitywiz.com/documentation/gravity-forms-unique-id/
+ */
+// Update "123" to your child form ID and "4" to your Unique ID field ID.
+add_filter( 'gpui_unique_id_attributes_123_4', function ( $atts, $form_id, $field_id ) {
+
+	// Update "5" to the ID of the field on your child form that is capturing the Nested Forms session hash.
+	$session_hash = rgpost( 'input_5' );
+	if ( empty( $session_hash ) ) {
+		return $atts;
+	}
+
+	$atts['slug'] = "gpnf-session-hash-{$session_hash}";
+
+	return $atts;
+}, 10, 3 );