From 48f1ae37362a80e0b8801d5ff21c84433ad351c3 Mon Sep 17 00:00:00 2001
From: huangzesen <hzsbazinga@outlook.com>
Date: Wed, 8 Jul 2026 16:53:52 -0700
Subject: [PATCH] Update tkm2re units metadata explicitly

---
 idl/general/misc/tkm2re.pro | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/idl/general/misc/tkm2re.pro b/idl/general/misc/tkm2re.pro
index 54d55ec02b..1fff0b6c16 100644
--- a/idl/general/misc/tkm2re.pro
+++ b/idl/general/misc/tkm2re.pro
@@ -97,6 +97,10 @@ for i = 0,n_elements(names)-1 do begin
      str_element,data_att,'units',label,/add
      str_element,dl,'data_att',data_att,/add
    endelse
+
+   ; str_element may not update an existing nested units field in-place on
+   ; all IDL runtimes, so assign the ensured field explicitly.
+   dl.data_att.units = label
    
    str_element,dl,'ysubtitle',success=s