diff --git a/controllers/heightController.js b/controllers/heightController.js
index 329e145..06723fe 100644
--- a/controllers/heightController.js
+++ b/controllers/heightController.js
@@ -1,3 +1,4 @@
+// @ts-check
 import path from 'path';
 import { fileURLToPath } from 'url';
 import { processAndConvert } from '../services/fileProcessor.js';
@@ -9,16 +10,29 @@ const __dirname = path.dirname(__filename);
 
 const uploadDir = 'uploads';
 
+const validStrategies = new Set(['blockHeight', 'txHash', 'searchTerm']);
+const isValidStrategy = (strategy) => {
+  return validStrategies.has(strategy);
+};
+
 export const handleHeightLogs = async (req, res) => {
-  const { height, network } = req.body;
-  if (!height) {
-    return res.status(400).json({ message: 'Height is required.' });
+  const { search, network, strategy } = req.body;
+  console.log(req.body);
+
+  if (!isValidStrategy(strategy)) {
+    return res.status(400).json({
+      message: 'Invalid strategy selected',
+    });
+  }
+
+  if (!search) {
+    return res.status(400).json({ message: 'Search input is required.' });
   }
   if (!network || !networks[network]) {
-    return res.status(400).json({ error: 'Bad Request: Network not found' });
+    return res.status(400).json({ message: 'Bad Request: Network not found' });
   }
 
-  console.log(`height:${height} AND AGORIC_NET:${network}`);
+  console.log(`SearchInput:${search} AND AGORIC_NET:${network}`);
 
   const uniqueSuffix = Date.now() + '-' + Math.round(Math.random() * 1e9);
   const inputFile = path.join(
@@ -42,7 +56,7 @@ export const handleHeightLogs = async (req, res) => {
   `;
 
   await fetchAndStoreHeightLogs({
-    blockHeight: height,
+    blockHeight: search,
     inputFile,
     network,
     queryfilter,
diff --git a/public/index.html b/public/index.html
index 0099641..2d5ba21 100644
--- a/public/index.html
+++ b/public/index.html
@@ -56,17 +56,17 @@
             </div>
 
             <div id="searchFormBottom">
-                <div class="searchInput" id="blockHeightInput">
-                    <input type="number" id="blockHeight" name="blockHeight" required>
+                <div id="blockHeightInput">
+                    <input class="searchInput" type="number" id="blockHeight" name="blockHeight">
                     <div class="spinner"></div>
                 </div>
 
-                <div class="searchInput" id="txHashInput">
-                    <input type="text" id="txHash" name="txHash" required>
+                <div id="txHashInput">
+                    <input class="searchInput" type="text" id="txHash" name="txHash">
                 </div>
 
-                <div class="searchInput" id="searchTermInput">
-                    <input type="text" id="searchTerm" name="searchTerm" required>
+                <div id="searchTermInput">
+                    <input class="searchInput" type="text" id="searchTerm" name="searchTerm">
                 </div>
 
                 <div id="spinnerSearchForm" class="spinner"></div>
diff --git a/public/scripts/submitSearch.js b/public/scripts/submitSearch.js
index 72940c0..b0f8c7d 100644
--- a/public/scripts/submitSearch.js
+++ b/public/scripts/submitSearch.js
@@ -15,27 +15,40 @@ searchTypeSelect.addEventListener('change', () => {
   }
 });
 
+const validStrategies = new Set(['blockHeight', 'txHash', 'searchTerm']);
+
+const isValidStrategy = (strategy) => {
+  if (!validStrategies.has(strategy)) {
+    return false;
+  }
+  return true;
+};
+
 document.getElementById('searchForm').addEventListener('submit', async (e) => {
   e.preventDefault();
 
-  const searchInputValue = document.querySelector('.searchInput').value;
-  const searchStrategy = document.getElementById('searchType').value;
+  const search = document.querySelector('.searchInput').value;
+  const strategy = document.getElementById('searchType').value;
   const spinner = document.getElementById('spinnerSearchForm');
-  const submitButton = document.getElementById('submitSearch');
+  const submitButton = document.getElementById('submitSearchButton');
   const network = document.getElementById('networkSelect').value;
 
   spinner.style.display = 'inline-block';
   submitButton.style.visibility = 'hidden';
   try {
+    if (!isValidStrategy(strategy)) {
+      throw new Error(`Invalid strategy selected: ${strategy}`);
+    }
+
     const response = await fetch('/submit-height', {
       method: 'POST',
       headers: {
         'Content-Type': 'application/json',
       },
       body: JSON.stringify({
-        searchInputValue,
+        search,
         network,
-        strategy: searchStrategy,
+        strategy,
       }),
     });
 
@@ -47,7 +60,8 @@ document.getElementById('searchForm').addEventListener('submit', async (e) => {
       svgElement.src = url;
       svgElement.style.display = 'inline-block';
     } else {
-      console.error('Failed to upload file');
+      let parsedResponse = await response.json();
+      console.error('Failed to upload file:', parsedResponse.message);
     }
   } catch (error) {
     console.error('Error:', error);