My custom Mailchimp API Form submits only the E-Mail-Adress. How can i change this?
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I made a form with the Mailchimp API. But no matter what i try i only get it to send back the e-mail-adress. If someone enters something else, like a name, the field is empty in the mailchimp backend.

So my form html code is this:


    <form id="signup" action="<?=$_SERVER['PHP_SELF']; ?>" method="get">


    <fieldset>

    <span id="response">
    <? require_once('inc/store-address.php'); if($_GET['submit']){ echo storeAddress(); } ?>
    </span>
			  
    <input type="hidden" name="u" value="123456789">
    <input type="hidden" name="id" value="12345">


    <div id="mergeTable" class="mergeTable">    

Then the field for the e-mail-address, that works:

    <div class="mergeRow dojoDndItem mergeRow-email" id="mergeRow-0">
    <label for="email"><strong>Email-Adresse</strong> <span class="asterisk">*</span></label>
    <div class="field-group">
    <input type="text" autocapitalize="off" autocorrect="off" name="email" id="email"       
    size="25" value="">
        
    </div>

    </div>

And this is the code for the name that never submits

    <div class="mergeRow dojoDndItem mergeRow-text" id="mergeRow-1">
    <label for="FNAME"><strong>Name</strong> <span class="asterisk">*</span></label>
    <div class="field-group">
    
    <input type="text" name="FNAME" id="FNAME" value="" />
    
    </div>

    </div>

My store address php file looks like this. No matter what i enter there i don't get the name to submit to mailchimp.

    function storeAddress(){
	
	// Validation
	if(!$_GET['email']){ return "No email address provided"; } 

	if(!preg_match("/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*$/i",       
        $_GET['email'])) {
		return "Email address is invalid"; 
	}

	require_once('MCAPI.class.php');
	// grab an API Key from http://admin.mailchimp.com/account/api/
	$api = new MCAPI('123456789');
	
	// grab your List's Unique Id by going to http://admin.mailchimp.com/lists/
	// Click the "settings" link for the list - the Unique Id is at the bottom of that page. 
	$list_id = "12345678";

	if($api->listSubscribe($list_id, $_GET['email'], '') === true) {
		// It worked!	
		return 'Success! Check your email to confirm sign up.';
	}else{
		// An error ocurred, return error message	
		return 'Error: ' . $api->errorMessage;
	}
	
    }

    // If being called via ajax, autorun the function
    if($_GET['ajax']){ echo storeAddress(); }

Maybe i just don't know the right GET Syntax or missing something bigger? Thank you for your help!