diff --git a/proto/FTCS.ipynb b/proto/FTCS.ipynb
index 91d0acc..25364cf 100644
--- a/proto/FTCS.ipynb
+++ b/proto/FTCS.ipynb
@@ -171,7 +171,7 @@
    "source": [
     "records = []\n",
     "\n",
-    "for i in range(10):\n",
+    "for i in range(1000):\n",
     "    C_t = simulate(C_t)\n",
     "    records.append(C_t)\n",
     "\n",
@@ -194,7 +194,7 @@
     "    y = records[w]\n",
     "    plt.imshow(y)\n",
     "    \n",
-    "interact(update, w = IntSlider(min=0, max = 99, step = 1, value = 0))"
+    "interact(update, w = IntSlider(min=0, max = 999, step = 1, value = 0))"
    ]
   },
   {