Hook when "Create Add Funds Invoice"

[Alberto464]

Hi,

I created a function that when called via Hook renames the invoices that are created, this allows me to have my own name without using the IDs.

This function almost always works correctly, except in one case: when I enter the customer profile from the administrator area, and click on "Create Add Funds Invoice". In this case the function does not start.
What Hook should I use in this case? I am attaching my function and also the hooks I used to call it.

 

function DN_writeNUMproforma($vars) {

	$inv_id = $vars['invoiceid'];

	$invoicenum_db = Capsule::table('tblinvoices')->where('id', $inv_id)->value('invoicenum');

    if ($invoicenum_db == null) {

    	$proforma_num = 'FP-' . date('Y') . '-' . date('m') . $inv_id . rand(0,9);

		Capsule::table('tblinvoices')
	        ->where('id', $inv_id)
	        ->update(
	            [
	                'invoicenum' => $proforma_num,
	            ]
	        );
	}
}


// =========================================================================
// Hook
// =========================================================================

add_hook('InvoiceCreated',1,'DN_writeNUMproforma'); 
add_hook('InvoiceCreation',1,'DN_writeNUMproforma'); 
add_hook('InvoiceCreationPreEmail',1,'DN_writeNUMproforma'); 
add_hook('InvoiceCreationAdminArea', 1,'DN_writeNUMproforma');