How to send invoice through API

Hi,

I'm working with the Invoice API and most of it goes well !

I am however struggling with the 'send invoice' instruction.

I read that I can send out the invoice upon creation, by adding the Send=true parameter. But I don't know where or how to integrate this.

On the other hand, I'm trying to email an already created invoice, and am sending following data through a post request:

$data = "<Custom.Subject>This is mail subject</Custom.Subject>

<Custom.Body>This is the mail content</Custom.Body>

and am getting following error: 1000 zf.api.iam.InternalError

Documentation says ' Parameters to be passed

authtoken, scope, apikey, Custom.Subject, Custom.Body, InvoiceID, ToEMailIDs, CCEMailIDs'

but obviously I'm misinterpreting something.

EmailIDs also don't really exist, so . I use the ContactID instead.

Your help will be appreciated !

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