diff --git a/Untitled.ipynb b/Untitled.ipynb
index 2ee932d..1c17091 100644
--- a/Untitled.ipynb
+++ b/Untitled.ipynb
@@ -3,7 +3,7 @@
   {
    "cell_type": "code",
    "execution_count": 3,
-   "id": "89b814eb",
+   "id": "820b3659",
    "metadata": {},
    "outputs": [
     {
@@ -40,7 +40,7 @@
   {
    "cell_type": "code",
    "execution_count": 4,
-   "id": "922ad6a5",
+   "id": "778a8669",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -50,7 +50,7 @@
   {
    "cell_type": "code",
    "execution_count": 9,
-   "id": "83e4e579",
+   "id": "2873f942",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -67,7 +67,7 @@
   {
    "cell_type": "code",
    "execution_count": 8,
-   "id": "d953c810",
+   "id": "40f61f2c",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -80,7 +80,7 @@
   {
    "cell_type": "code",
    "execution_count": 11,
-   "id": "8bd255b0",
+   "id": "d4861188",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -94,7 +94,7 @@
   {
    "cell_type": "code",
    "execution_count": 6,
-   "id": "5d4b9209",
+   "id": "92005cf0",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -116,7 +116,7 @@
   {
    "cell_type": "code",
    "execution_count": 12,
-   "id": "73a451eb",
+   "id": "5863f30d",
    "metadata": {},
    "outputs": [],
    "source": [
diff --git a/app_spec.yml b/app_spec.yml
index 6785934..3635ae6 100644
--- a/app_spec.yml
+++ b/app_spec.yml
@@ -6,5 +6,5 @@
 output:
   Output:
     name: Output
-    value_type: str
+    value_type: img
     description: ''