diff --git a/dual-token-model.ipynb b/dual-token-model.ipynb
index 4681568..5a84242 100644
--- a/dual-token-model.ipynb
+++ b/dual-token-model.ipynb
@@ -248,7 +248,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "ae0f2f927840437095ed7a9cdff1f215",
+       "model_id": "f6116af485e148a683afc2a97ae00a73",
        "version_major": 2,
        "version_minor": 0
       },
@@ -287,7 +287,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "aa943a7445424be7bf77dd0722c29020",
+       "model_id": "6634b7a1023549f5b34f05fd87e6f593",
        "version_major": 2,
        "version_minor": 0
       },
@@ -342,7 +342,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "3d11d68607dd4881bcac9a71e91a30c1",
+       "model_id": "fe8c71b89b524a028f35523696638663",
        "version_major": 2,
        "version_minor": 0
       },
@@ -463,14 +463,23 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
+   "execution_count": 9,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "ename": "SyntaxError",
+     "evalue": "EOL while scanning string literal (<ipython-input-9-6e290785eae3>, line 4)",
+     "output_type": "error",
+     "traceback": [
+      "\u001b[0;36m  File \u001b[0;32m\"<ipython-input-9-6e290785eae3>\"\u001b[0;36m, line \u001b[0;32m4\u001b[0m\n\u001b[0;31m    G=ipywidgets.widgetstable_baselines.ACKTR('Mls.FloatSlider(min=0, max=100, step=1, value=2)\u001b[0m\n\u001b[0m                                                                                               ^\u001b[0m\n\u001b[0;31mSyntaxError\u001b[0m\u001b[0;31m:\u001b[0m EOL while scanning string literal\n"
+     ]
+    }
+   ],
    "source": [
     "# YOU DON'T NEED TO READ THIS SECTION UNLESS YOU WANT TO KNOW THE IMPLEMENT DETAILS OF FIGURES\n",
     "class retial_investor(solution):\n",
     "    A=ipywidgets.widgets.FloatSlider(min=0, max=1000, step=10, value=100)\n",
-    "    G=ipywidgets.widgetstable_baselines.ACKTR('Mls.FloatSlider(min=0, max=100, step=1, value=2)\n",
+    "    G=ipywidgets.widget.ACKTR('Mls.FloatSlider(min=0, max=100, step=1, value=2)\n",
     "    N=ipywidgets.widgets.FloatSlider(min=0, max=100, step=1, value=10)\n",
     "    I = ipywidgets.widgets.FloatSlider(min=10**6, max=10**8, step=10**6, value=10**7)\n",
     "    U = ipywidgets.widgets.FloatSlider(min=10**8, max=10**8, step=10**8, value=10**8)\n",
@@ -562,24 +571,9 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "application/vnd.jupyter.widget-view+json": {
-       "model_id": "ddfe855be1b542dc80fad2c1ba74e71e",
-       "version_major": 2,
-       "version_minor": 0
-      },
-      "text/plain": [
-       "interactive(children=(FloatSlider(value=0.6366197723675814, description='S', max=1.2732395447351628, step=0.06…"
-      ]
-     },
-     "metadata": {},
-     "output_type": "display_data"
-    }
-   ],
+   "outputs": [],
    "source": [
     "@retial_investor.decorator()\n",
     "def draw(S, T, K, A, G, N, I, U, R, W):\n",
@@ -617,24 +611,9 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "application/vnd.jupyter.widget-view+json": {
-       "model_id": "0eaf8dddecf541568c198b246d2ace36",
-       "version_major": 2,
-       "version_minor": 0
-      },
-      "text/plain": [
-       "interactive(children=(FloatSlider(value=0.6366197723675814, description='S', max=1.2732395447351628, step=0.06…"
-      ]
-     },
-     "metadata": {},
-     "output_type": "display_data"
-    }
-   ],
+   "outputs": [],
    "source": [
     "@retial_investor.decorator()\n",
     "def draw(S, T, K, A, G, N, I, U, R, W):\n",
@@ -672,24 +651,9 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 9,
+   "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "application/vnd.jupyter.widget-view+json": {
-       "model_id": "0c5a24477c324b2da5ab42ebdd6367d8",
-       "version_major": 2,
-       "version_minor": 0
-      },
-      "text/plain": [
-       "interactive(children=(FloatSlider(value=0.6366197723675814, description='S', max=1.2732395447351628, step=0.06…"
-      ]
-     },
-     "metadata": {},
-     "output_type": "display_data"
-    }
-   ],
+   "outputs": [],
    "source": [
     "@retial_investor.decorator()\n",
     "def draw(S, T, K, A, G, N, I, U, R, W):\n",
@@ -727,24 +691,9 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 10,
+   "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "application/vnd.jupyter.widget-view+json": {
-       "model_id": "f90d812922bd438ab63eb11fbc23cf5f",
-       "version_major": 2,
-       "version_minor": 0
-      },
-      "text/plain": [
-       "interactive(children=(FloatSlider(value=0.6366197723675814, description='S', max=1.2732395447351628, step=0.06…"
-      ]
-     },
-     "metadata": {},
-     "output_type": "display_data"
-    }
-   ],
+   "outputs": [],
    "source": [
     "@retial_investor.decorator()\n",
     "def draw(S, T, K, A, G, N, I, U, R, W):\n",
@@ -782,24 +731,9 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 11,
+   "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "application/vnd.jupyter.widget-view+json": {
-       "model_id": "f664cadee643404c8d3684ac230f9d30",
-       "version_major": 2,
-       "version_minor": 0
-      },
-      "text/plain": [
-       "interactive(children=(FloatSlider(value=0.6366197723675814, description='S', max=1.2732395447351628, step=0.06…"
-      ]
-     },
-     "metadata": {},
-     "output_type": "display_data"
-    }
-   ],
+   "outputs": [],
    "source": [
     "@retial_investor.decorator()\n",
     "def draw(S, T, K, A, G, N, I, U, R, W):\n",