From 93af9edbe5f59c4853ce125f28a315b15deff298 Mon Sep 17 00:00:00 2001
From: Coleman Watts <coleman@civicrm.org>
Date: Tue, 26 Jul 2022 12:42:52 -0400
Subject: [PATCH] APIv4 - Allow values to start with a dollar sign in chaining

Fixes dev/core#3754
---
 Civi/Api4/Provider/ActionObjectProvider.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Civi/Api4/Provider/ActionObjectProvider.php b/Civi/Api4/Provider/ActionObjectProvider.php
index 4d6dda02df31..2a48d3165d10 100644
--- a/Civi/Api4/Provider/ActionObjectProvider.php
+++ b/Civi/Api4/Provider/ActionObjectProvider.php
@@ -118,7 +118,7 @@ protected function resolveChainLinks(&$val, $result) {
     }
     elseif (is_string($val) && strlen($val) > 1 && substr($val, 0, 1) === '$') {
       $key = substr($val, 1);
-      $val = $result[$key] ?? \CRM_Utils_Array::pathGet($result, explode('.', $key));
+      $val = $result[$key] ?? \CRM_Utils_Array::pathGet($result, explode('.', $key)) ?? $val;
     }
   }