Making one ajax call when another executes successfully - php

Question

I'm trying to make another ajax call when one is executed successfully to pass the post variable to another controller action. However, it is returning null when I check the console log message. I'm not sure why.
Here is my code:
jQuery:
$('#modify-store-name').on('change', function() {
$.ajax({
type: "POST",
url: "/user/get-one-store",
dataType: "json",
data: {
store_name: $(this).val()
}
}).done(function (msg) {
$.each(msg, function (i) {
$('#modify-store-label').attr('style', '');
$('#modify-store-desc').attr('style', '');
$('#modify-store-category-label').attr('style', '');
$('#modify-store-category').attr('style', '');
$('.upload-btn-wrapper').attr('style', '');
$('#modify-store-desc').val(msg[i].store_description);
$('#modify-store-category').html($("<option />").val(msg[i].store_category).text(msg[i].store_category));
$('#msubmit').attr('disabled', false);
});
$.ajax({
type: "POST",
url: "/user/modify-store",
dataType: "json",
data: {
store_name2: $('#modify-store-name').val() // why is this sending a null value
}
}).done(function(msg) {
console.log(msg);
}).fail(function(msg) {
console.log(msg);
});
}).fail(function (msg) {
$("#msg").html(msg.failure);
});
});
and my php code:
public function getonestoreAction()
{
$layout = $this->layout();
$layout->setTerminal(true);
$view_model = new ViewModel();
$view_model->setTerminal(true);
try {
$store_name = $this->params()->fromPost('store_name');
echo json_encode($this->getUserService()->getAStore($store_name));
} catch (\Exception $e) {
echo json_encode(array('failure' => $e->getMessage()));
}
return $view_model;
}
public function modifystoreAction()
{
$layout = $this->layout();
$layout->setTerminal(true);
$view_model = new ViewModel();
$view_model->setTerminal(true);
if ($this->getRequest()->isPost()) {
try {
$store_name = $this->params()->fromPost('store-name2');
echo json_encode($store_name); // returning null
$mstore_name = $this->params()->fromPost('modify-store-name');
$mstore_description = $this->params()->fromPost('modify-store-description');
$mstore_category = $this->params()->fromPost('modify-store-category');
$mstore_image = $this->params()->fromFiles('modify-store-image');
if (count($mstore_image) > 0) {
if ($this->getUserService()->modifyStore($store_name, array('store_name' => $mstore_name, 'store_description' => $mstore_description, 'store_category' => $mstore_category, 'store_image' => $mstore_image, 'tmp_name' => $mstore_image['tmp_name']))) {
echo json_encode(array('success' => 'Store was modified successfully.'));
}
}
} catch (\Exception $e) {
echo json_encode(array('failure' => $e->getMessage()));
}
}
return $view_model;
}
I read that you can make two ajax calls like this but I'm not sure why one is not passing the store name via post.
Any help would be appreciated
Thanks!