diff --git a/finder/dotnet/AppiumFlutterFinder/FlutterBy.cs b/finder/dotnet/AppiumFlutterFinder/FlutterBy.cs
index 81f4bc58..4d913dc6 100644
--- a/finder/dotnet/AppiumFlutterFinder/FlutterBy.cs
+++ b/finder/dotnet/AppiumFlutterFinder/FlutterBy.cs
@@ -71,8 +71,8 @@ public static FlutterBy ByAnscestor(FlutterBy of,
             => new FlutterBy(new
             {
                 finderType = "Ancestor",
-                matchRoot,
-                firstMatchOnly,
+                matchRoot = matchRoot.ToString().ToLower(),
+                firstMatchOnly = firstMatchOnly.ToString().ToLower(),
                 of = of.JsonSearchCriteria,
                 matching = matching.JsonSearchCriteria,
             });
@@ -84,8 +84,8 @@ public static FlutterBy ByDescendant(FlutterBy of,
             => new FlutterBy(new
             {
                 finderType = "Descendant",
-                matchRoot,
-                firstMatchOnly,
+                matchRoot = matchRoot.ToString().ToLower(),
+                firstMatchOnly = firstMatchOnly.ToString().ToLower(),
                 of = of.JsonSearchCriteria,
                 matching = matching.JsonSearchCriteria,
             });
@@ -93,4 +93,3 @@ public static FlutterBy ByDescendant(FlutterBy of,
 
     }
 }
-
diff --git a/finder/dotnet/AppiumFlutterFinderTests/FlutterFinderTests.cs b/finder/dotnet/AppiumFlutterFinderTests/FlutterFinderTests.cs
index 73d6f8d8..ec6e1ae2 100644
--- a/finder/dotnet/AppiumFlutterFinderTests/FlutterFinderTests.cs
+++ b/finder/dotnet/AppiumFlutterFinderTests/FlutterFinderTests.cs
@@ -16,7 +16,7 @@ public void TestByAncestor()
                                       FlutterBy.PageBack()),
                 firstMatchOnly: true
                 ));
-            Assert.AreEqual("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", element.Id);
+            Assert.AreEqual("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", element.Id);
         }
 
         [Test]
@@ -28,7 +28,7 @@ public void TestBydescendant()
                 FlutterBy.ByDescendant(FlutterBy.PageBack(),
                                       FlutterBy.PageBack())
                 ));
-            Assert.AreEqual("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", element.Id);
+            Assert.AreEqual("eyJmaW5kZXJUeXBlIjoiRGVzY2VuZGFudCIsIm1hdGNoUm9vdCI6ImZhbHNlIiwiZmlyc3RNYXRjaE9ubHkiOiJmYWxzZSIsIm9mIjoie1wiZmluZGVyVHlwZVwiOlwiRGVzY2VuZGFudFwiLFwibWF0Y2hSb290XCI6XCJmYWxzZVwiLFwiZmlyc3RNYXRjaE9ubHlcIjpcImZhbHNlXCIsXCJvZlwiOlwie1xcXCJmaW5kZXJUeXBlXFxcIjpcXFwiUGFnZUJhY2tcXFwifVwiLFwibWF0Y2hpbmdcIjpcIntcXFwiZmluZGVyVHlwZVxcXCI6XFxcIlBhZ2VCYWNrXFxcIn1cIn0iLCJtYXRjaGluZyI6IntcImZpbmRlclR5cGVcIjpcIkRlc2NlbmRhbnRcIixcIm1hdGNoUm9vdFwiOlwiZmFsc2VcIixcImZpcnN0TWF0Y2hPbmx5XCI6XCJmYWxzZVwiLFwib2ZcIjpcIntcXFwiZmluZGVyVHlwZVxcXCI6XFxcIlBhZ2VCYWNrXFxcIn1cIixcIm1hdGNoaW5nXCI6XCJ7XFxcImZpbmRlclR5cGVcXFwiOlxcXCJQYWdlQmFja1xcXCJ9XCJ9In0=", element.Id);
         }
 
         [Test]