Construction of the credit rejection response by a PHP script

gistfile1.xml

<scripting:component doc:name="Prepare rejection response">
    <scripting:script engine="php">
        <scripting:text>
            <![CDATA[
            
                <?php

                $request = json_decode($payload, true);
                
                $response["outcome"] = $message->getProperty("outcome");
                $response["maxAmount"] = $request["maxAmount"];
                
                return json_encode($response);

                ?>

            ]]>
        </scripting:text>
    </scripting:script>
</scripting:component>