How to add multiple metafields in customer

Retired Boards Appdev Metafields
1

I am trying to add multiple metafields in a single post.

$data = array( 
	'customer' => array(
		'id' => $customer_id,
		'metafield' =>
		  array(
                'key' => 'od_sph',
                'value' => $params['od_sph'],
                'value_type' => 'string',               
                'namespace' => 'global'
            ),
            array(
                'key' => 'os_sph',
                'value' => $params['os_sph'],
                'value_type' => 'string',               
                'namespace' => 'global'
            ),
            array(
                'key' => 'os_cyl',
                'value' => $params['os_cyl'],
                'value_type' => 'string',               
                'namespace' => 'global'
            ),
            array(
                'key' => 'os_add',
                'value' => $params['os_add'],
                'value_type' => 'string',               
                'namespace' => 'global'
            )         
		)
   );

It adds only a single metafield. Please help.

2

Correct, because “metafield” as the name suggests is not a list, it holds a single object (i.e. PHP array). The rest are ignored as they are not event assigned to the “metafield” field, not sure how this is serialized into JSON.

What is the endpoint you are sending your requests to, which method?