diff --git a/Docs/PathConfiguration.md b/Docs/PathConfiguration.md
index 7046fad..0004335 100644
--- a/Docs/PathConfiguration.md
+++ b/Docs/PathConfiguration.md
@@ -137,3 +137,20 @@ if let enableFeatureX = pathConfiguration.settings["enable-feature-x"] as? Bool
 }
 ```
 
+### Swift Regex
+
+The Turbo IOS framework uses `NSRegularExpression` swift class to evaluate regular expressions. Something to note is you need to escape back slashes `\` because it is a special charectars in Swift to do this add a second backslash `\\d`
+
+```json
+[
+    {
+      "patterns": [
+        "/numbers/\\d+$"
+      ],
+      "properties": {
+        "view-controller": "numbersDetail",
+        "presentation": "modal"
+      }
+    },
+]
+```