From f448a1a26092fb3d59ec07918f05264e93050feb Mon Sep 17 00:00:00 2001
From: Chris Schuld <chris@chrisschuld.com>
Date: Wed, 21 Dec 2016 12:20:33 -0700
Subject: [PATCH] simple change to address that custom args cannot be anything
 but strings

---
 lib/helpers/mail/Mail.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/helpers/mail/Mail.php b/lib/helpers/mail/Mail.php
index 4311a316d..07c2eca2f 100644
--- a/lib/helpers/mail/Mail.php
+++ b/lib/helpers/mail/Mail.php
@@ -807,7 +807,7 @@ public function getSubstitutions()
 
     public function addCustomArg($key, $value)
     {
-        $this->custom_args[$key] = $value;
+        $this->custom_args[$key] = (string)$value;
     }
 
     public function getCustomArgs()
@@ -1020,7 +1020,7 @@ public function getCategories()
 
     public function addCustomArg($key, $value)
     {
-        $this->custom_args[$key] = $value;
+        $this->custom_args[$key] = (string)$value;
     }
 
     public function getCustomArgs()