diff --git a/demo/hello_world_2/run.ipynb b/demo/hello_world_2/run.ipynb
index 60d1dcb115..9728b1e44b 100644
--- a/demo/hello_world_2/run.ipynb
+++ b/demo/hello_world_2/run.ipynb
@@ -1 +1 @@
-{"cells": [{"cell_type": "markdown", "id": "302934307671667531413257853548643485645", "metadata": {}, "source": ["# Gradio Demo: hello_world_2"]}, {"cell_type": "code", "execution_count": null, "id": "272996653310673477252411125948039410165", "metadata": {}, "outputs": [], "source": ["!pip install -q gradio "]}, {"cell_type": "code", "execution_count": null, "id": "288918539441861185822528903084949547379", "metadata": {}, "outputs": [], "source": ["import gradio as gr\n", "\n", "def greet(name, intensity):\n", "    return \"Hello \" * intensity + name + \"!\"\n", "\n", "demo = gr.Interface(\n", "    fn=greet,\n", "    inputs=[\"text\", gr.Slider(value=2, minimum=1, maximum=10)],\n", "    outputs=[gr.Textbox(label=\"greeting\", lines=3)],\n", ")\n", "\n", "if __name__ == \"__main__\":\n", "    demo.launch()\n"]}], "metadata": {}, "nbformat": 4, "nbformat_minor": 5}
\ No newline at end of file
+{"cells": [{"cell_type": "markdown", "id": "302934307671667531413257853548643485645", "metadata": {}, "source": ["# Gradio Demo: hello_world_2"]}, {"cell_type": "code", "execution_count": null, "id": "272996653310673477252411125948039410165", "metadata": {}, "outputs": [], "source": ["!pip install -q gradio "]}, {"cell_type": "code", "execution_count": null, "id": "288918539441861185822528903084949547379", "metadata": {}, "outputs": [], "source": ["import gradio as gr\n", "\n", "def greet(name, intensity):\n", "    return \"Hello, \" + name + \"!\" * intensity\n", "\n", "demo = gr.Interface(\n", "    fn=greet,\n", "    inputs=[\"text\", gr.Slider(value=2, minimum=1, maximum=10, step=1)],\n", "    outputs=[gr.Textbox(label=\"greeting\", lines=3)],\n", ")\n", "\n", "if __name__ == \"__main__\":\n", "    demo.launch()\n"]}], "metadata": {}, "nbformat": 4, "nbformat_minor": 5}
\ No newline at end of file
diff --git a/demo/hello_world_2/run.py b/demo/hello_world_2/run.py
index e0c906c866..01a5834e98 100644
--- a/demo/hello_world_2/run.py
+++ b/demo/hello_world_2/run.py
@@ -1,11 +1,11 @@
 import gradio as gr
 
 def greet(name, intensity):
-    return "Hello " * intensity + name + "!"
+    return "Hello, " + name + "!" * intensity
 
 demo = gr.Interface(
     fn=greet,
-    inputs=["text", gr.Slider(value=2, minimum=1, maximum=10)],
+    inputs=["text", gr.Slider(value=2, minimum=1, maximum=10, step=1)],
     outputs=[gr.Textbox(label="greeting", lines=3)],
 )
 
diff --git a/demo/hello_world_4/run.ipynb b/demo/hello_world_4/run.ipynb
index e8a8385b50..02a46f06df 100644
--- a/demo/hello_world_4/run.ipynb
+++ b/demo/hello_world_4/run.ipynb
@@ -1 +1 @@
-{"cells": [{"cell_type": "markdown", "id": "302934307671667531413257853548643485645", "metadata": {}, "source": ["# Gradio Demo: hello_world_4"]}, {"cell_type": "code", "execution_count": null, "id": "272996653310673477252411125948039410165", "metadata": {}, "outputs": [], "source": ["!pip install -q gradio "]}, {"cell_type": "code", "execution_count": null, "id": "288918539441861185822528903084949547379", "metadata": {}, "outputs": [], "source": ["import gradio as gr\n", "\n", "def greet(name, intensity):\n", "    return \"Hello \" * intensity + name + \"!\"\n", "\n", "demo = gr.Interface(\n", "    fn=greet,\n", "    inputs=[\"text\", \"slider\"],\n", "    outputs=[\"text\"],\n", ")\n", "\n", "if __name__ == \"__main__\":\n", "    demo.launch()\n"]}], "metadata": {}, "nbformat": 4, "nbformat_minor": 5}
\ No newline at end of file
+{"cells": [{"cell_type": "markdown", "id": "302934307671667531413257853548643485645", "metadata": {}, "source": ["# Gradio Demo: hello_world_4"]}, {"cell_type": "code", "execution_count": null, "id": "272996653310673477252411125948039410165", "metadata": {}, "outputs": [], "source": ["!pip install -q gradio "]}, {"cell_type": "code", "execution_count": null, "id": "288918539441861185822528903084949547379", "metadata": {}, "outputs": [], "source": ["import gradio as gr\n", "\n", "def greet(name, intensity):\n", "    return \"Hello, \" + name + \"!\" * int(intensity)\n", "\n", "demo = gr.Interface(\n", "    fn=greet,\n", "    inputs=[\"text\", \"slider\"],\n", "    outputs=[\"text\"],\n", ")\n", "\n", "if __name__ == \"__main__\":\n", "    demo.launch()\n"]}], "metadata": {}, "nbformat": 4, "nbformat_minor": 5}
\ No newline at end of file
diff --git a/demo/hello_world_4/run.py b/demo/hello_world_4/run.py
index 09b7f55c23..2f1430e950 100644
--- a/demo/hello_world_4/run.py
+++ b/demo/hello_world_4/run.py
@@ -1,7 +1,7 @@
 import gradio as gr
 
 def greet(name, intensity):
-    return "Hello " * intensity + name + "!"
+    return "Hello, " + name + "!" * int(intensity)
 
 demo = gr.Interface(
     fn=greet,