From af374440d9a915123ccb704690882c3063d9c454 Mon Sep 17 00:00:00 2001
From: Craig Warren <craig_warren@me.com>
Date: Mon, 4 Sep 2023 11:40:32 +0100
Subject: [PATCH] Further tweaks for pml formulation and CLI

---
 gprMax/hash_cmds_singleuse.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gprMax/hash_cmds_singleuse.py b/gprMax/hash_cmds_singleuse.py
index 61145e13..21fea96d 100644
--- a/gprMax/hash_cmds_singleuse.py
+++ b/gprMax/hash_cmds_singleuse.py
@@ -136,7 +136,7 @@ def process_singlecmds(singlecmds):
             logger.exception(f"{cmd} requires either one or six parameter(s)")
             raise ValueError
         
-        if pml_formulation in locals():
+        if 'pml_formulation' in locals():
             if len(tmp) == 1:
                 pml_props = PMLProps(formulation=pml_formulation, thickness=int(tmp[0]))
             else: