diff --git a/src/components/InteractiveCode.astro b/src/components/InteractiveCode.astro
index 37d612d..ab7ae25 100644
--- a/src/components/InteractiveCode.astro
+++ b/src/components/InteractiveCode.astro
@@ -138,7 +138,7 @@ const codeHtml = highlightCode(trimAndDedent(code));
 </div>
 
 <script>
-    type Instruction = "line" | "out" | "set";
+    type Instruction = "line" | "out" | "set" | "unset";
     type AlpineState = {
         line: number,
         stdout: string,
@@ -170,6 +170,10 @@ const codeHtml = highlightCode(trimAndDedent(code));
                     data.state[String(instructionArr[1])] = String(instructionArr[2]);
                     break;
                 }
+                case "unset": {
+                    delete data.state[String(instructionArr[1])];
+                    break;
+                }
             }
         }
 
diff --git a/src/pages/learn/error-handling/try.mdx b/src/pages/learn/error-handling/try.mdx
index 9a8435f..35bbbaf 100644
--- a/src/pages/learn/error-handling/try.mdx
+++ b/src/pages/learn/error-handling/try.mdx
@@ -86,17 +86,21 @@ Use a naked `try` when you want to rethrow an error, if there is any.
     steps={`[
         [["line", 14]],
         [["line", 7]],
-        [["line", 10]],
+        [
+            ["line", 10],
+            ["set", "Int result", "..."]
+        ],
         [["line", 1]],
         [["line", 3]],
         [
             ["line", 10],
-            ["set", "result", 50]
+            ["set", "Int result", "Int 50"]
         ],
         [["line", 11]],
         [
             ["line", 14],
             ["out", "The result is 50\\n"],
+            ["unset", "Int result"],
         ],
         [
             ["line", 15],