1 files changed, 6 insertions, 6 deletions

diff --git a/filters/vars.lua b/filters/vars.lua
index 99cedc4..61803cb 100644
--- a/filters/vars.lua
+++ b/filters/vars.lua
@@ -1,3 +1,4 @@
+local utils = require 'pandoc.utils'
 local common = require 'scripts.lib.common'
 
 local vars = {}
@@ -12,15 +13,14 @@ function str(el)
         local var = vars
 
         for i = 1, #parts do
-            local part = parts[i]
-            local v = var[part]
+            var = var[parts[i]]
 
-            if not v then return el end
-
-            var = v
+            if not var then
+                return el
+            end
         end
 
-        if var then return pandoc.Str(prefix .. var .. suffix) end
+        return pandoc.Str(prefix .. utils.stringify(var) .. suffix)
     end
 
     return el