add field to product add edit form variations wc vendors pro

functions.php

/* add to your theme or child theme functions.php file to create a new field for a variation on the vendor add-edit product form */
add_action( 'wcv_product_variation_after_pricing', 'wcv_custom_product_msrp_price_field_variation' );
function wcv_custom_product_msrp_price_field_variation ($post_id) {
WCVendors_Pro_Form_Helper::input( array(  
		'post_id'			=> $post_id, 
		'id' 				=> '_wcv_custom_product_msrp_price_variation', 
		'label' 			=> __( 'MSRP Price', 'wcvendors-pro' ), 
		'placeholder' 		=> __( 'MSRP Price', 'wcvendors-pro' ), 
		'desc_tip' 			=> 'true', 
		'description' 		=> __( 'Please specify MSRP Price', 'wcvendors-pro' ), 
	) 
);
}

/* add to your theme or child theme functions.php to display the field entry on the product page for customer view */
add_action('woocommerce_before_add_to_cart_form', 'wcv_custom_product_msrp_price_variation_display');
function wcv_custom_product_msrp_price_variation_display() {
    $output = get_post_meta(get_the_ID(), '_wcv_custom_product_msrp_price_variation',true ); 
    echo '<p>'.'Retail Price: ' . $output . '</p>';
}