diff --git a/index.ts b/index.ts
index 2c652e0..9c941a2 100644
--- a/index.ts
+++ b/index.ts
@@ -4,6 +4,7 @@ import rimraf from 'rimraf';
 import { readFileSync, writeFileSync } from 'fs';
 import Handlebars from 'handlebars';
 import mkdirp from 'mkdirp';
+import { range } from 'underscore';
 
 const BUILD_DIR = join(__dirname, 'build');
 const SRC_DIR = join(__dirname, 'src');
@@ -34,5 +35,8 @@ function renderTemplate(template: HandlebarsTemplateDelegate, value: number) {
 
   const template = Handlebars.compile(readFileSync(join(BUILD_DIR, 'template.html')).toString());
 
-  renderTemplate(template, 123);
+  range(0, 10, 0.5).forEach((i) => {
+    console.log(i);
+    renderTemplate(template, i);
+  });
 })();
diff --git a/package-lock.json b/package-lock.json
index d607789..9624519 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1093,6 +1093,11 @@
         "@types/node": "*"
       }
     },
+    "@types/underscore": {
+      "version": "1.9.1",
+      "resolved": "https://registry.npmjs.org/@types/underscore/-/underscore-1.9.1.tgz",
+      "integrity": "sha512-ROHiJBeuXxVVaKm65tM/LHWlkcTFBQJqJgDB90Vj3fsl8Q290Z29cmEwnpvtlb0nSzuMIaIYWj0ZvmVgim8khA=="
+    },
     "abab": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/abab/-/abab-2.0.0.tgz",
@@ -6432,6 +6437,11 @@
         }
       }
     },
+    "underscore": {
+      "version": "1.9.1",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.9.1.tgz",
+      "integrity": "sha512-5/4etnCkd9c8gwgowi5/om/mYO5ajCaOgdzj/oW+0eQV9WxKBDZw5+ycmKmeaTXjInS/W0BzpGLo2xR2aBwZdg=="
+    },
     "unicode-canonical-property-names-ecmascript": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/unicode-canonical-property-names-ecmascript/-/unicode-canonical-property-names-ecmascript-1.0.4.tgz",
diff --git a/package.json b/package.json
index 1d45bb0..7752e94 100644
--- a/package.json
+++ b/package.json
@@ -21,6 +21,7 @@
     "@types/node": "^12.0.10",
     "@types/parcel-bundler": "^1.12.0",
     "@types/rimraf": "^2.0.2",
+    "@types/underscore": "^1.9.1",
     "animate.css": "3.7.0",
     "bootstrap": "4.2.1",
     "handlebars": "^4.1.2",
@@ -29,7 +30,8 @@
     "rimraf": "^2.6.3",
     "sass": "^1.22.1",
     "ts-node": "8.3.0",
-    "typescript": "3.5.2"
+    "typescript": "3.5.2",
+    "underscore": "^1.9.1"
   },
   "devDependencies": {
     "tslint-config-dabapps": "github:dabapps/tslint-config-dabapps#v0.5.1",