diff --git a/composer.json b/composer.json
index ba13b3c..d30bd43 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
     ],
 
     "require": {
-        "php": ">=7.4",
+        "php": "^7.4",
         "comely-io/data-types": "^1.0",
         "guzzlehttp/guzzle": "^7.0",
         "iexbase/web3.php": "^2.0.1",
diff --git a/src/Concerns/ManagesUniversal.php b/src/Concerns/ManagesUniversal.php
index 0e08555..1a032eb 100644
--- a/src/Concerns/ManagesUniversal.php
+++ b/src/Concerns/ManagesUniversal.php
@@ -59,7 +59,7 @@ public function balances(array $accounts, $isValid = false): array
      * @return array
      * @throws ErrorException
      */
-    public function sendOneToMany(array $to, $private_key = null, bool $isValid = false, string $from = null): array
+    public function sendOneToMany(array $to, $private_key = null, $isValid = false, string $from): array
     {
         if(!is_null($private_key)) {
             $this->privateKey = $private_key;
diff --git a/src/TransactionBuilder.php b/src/TransactionBuilder.php
index 1403a7c..f940de5 100644
--- a/src/TransactionBuilder.php
+++ b/src/TransactionBuilder.php
@@ -32,12 +32,11 @@ public function __construct(Tron $tron)
      *
      * @param string $to
      * @param float $amount
-     * @param string|null $from
-     * @param string|null $message
+     * @param string $from
      * @return array
      * @throws TronException
      */
-    public function sendTrx(string $to, float $amount, string $from = null, string $message = null)
+    public function sendTrx($to, $amount, string $from = null)
     {
         if ($amount < 0) {
             throw new TronException('Invalid amount provided');
@@ -54,17 +53,13 @@ public function sendTrx(string $to, float $amount, string $from = null, string $
             throw new TronException('Cannot transfer TRX to the same account');
         }
 
-        $options = [
+        $response = $this->tron->getManager()->request('wallet/createtransaction', [
             'to_address' => $to,
             'owner_address' => $from,
             'amount' => $this->tron->toTron($amount),
-        ];
-
-        if(!is_null($message)) {
-            $params['extra_data'] = $this->tron->stringUtf8toHex($message);
-        }
+        ]);
 
-        return $this->tron->getManager()->request('wallet/createtransaction', $options);
+        return $response;
     }
 
     /**
@@ -258,11 +253,8 @@ public function createToken($options = [], $issuerAddress = null)
      * @return array
      * @throws TronException
      */
-    public function freezeBalance(float $amount = 0, int $duration = 3, string $resource = 'BANDWIDTH', string $address = null)
+    public function freezeBalance(float $amount = 0, int $duration = 3, string $resource = 'BANDWIDTH', string $address)
     {
-        if(empty($address))
-            throw new TronException('Address not specified');
-
         if (!in_array($resource, ['BANDWIDTH', 'ENERGY'])) {
             throw new TronException('Invalid resource provided: Expected "BANDWIDTH" or "ENERGY"');
         }
@@ -292,12 +284,8 @@ public function freezeBalance(float $amount = 0, int $duration = 3, string $reso
      * @return array
      * @throws TronException
      */
-    public function unfreezeBalance(string $resource = 'BANDWIDTH', string $owner_address = null)
+    public function unfreezeBalance(string $resource = 'BANDWIDTH', string $owner_address)
     {
-        if(is_null($owner_address)) {
-            throw new TronException('Owner Address not specified');
-        }
-
         if (!in_array($resource, ['BANDWIDTH', 'ENERGY'])) {
             throw new TronException('Invalid resource provided: Expected "BANDWIDTH" or "ENERGY"');
         }
@@ -338,12 +326,8 @@ public function withdrawBlockRewards($owner_address = null)
      * @return array
      * @throws TronException
      */
-    public function updateToken(string $description, string $url, int $freeBandwidth = 0, int $freeBandwidthLimit = 0, $address = null)
+    public function updateToken(string $description, string $url, int $freeBandwidth = 0, int $freeBandwidthLimit = 0, $address)
     {
-        if(is_null($address)) {
-            throw new TronException('Owner Address not specified');
-        }
-
         if (!is_integer($freeBandwidth) || $freeBandwidth < 0) {
             throw new TronException('Invalid free bandwidth amount provided');
         }
diff --git a/src/Tron.php b/src/Tron.php
index 5ff3d21..9d51343 100644
--- a/src/Tron.php
+++ b/src/Tron.php
@@ -677,19 +677,19 @@ public function getTransactionCount(): int
      * @param string $to
      * @param float $amount
      * @param string|null $message
-     * @param string|null $from
+     * @param string $from
      *
      * @return array
      * @throws TronException
      */
-    public function sendTransaction(string $to, float $amount, string $from = null, string $message = null): array
+    public function sendTransaction(string $to, float $amount, string $message= null, string $from = null): array
     {
         if (is_null($from)) {
             $from = $this->address['hex'];
         }
 
-        $transaction = $this->transactionBuilder->sendTrx($to, $amount, $from, $message);
-        $signedTransaction = $this->signTransaction($transaction);
+        $transaction = $this->transactionBuilder->sendTrx($to, $amount, $from);
+        $signedTransaction = $this->signTransaction($transaction, $message);
 
 
         $response = $this->sendRawTransaction($signedTransaction);