
Thanks in advance,
2 respuestas

Well, i was thinking in an custom object called "invoices". This object will have a custom field called "invoice type" that is a text field. And each "invoice type" will have a monthly value (currency). So, at the very begining, all types of invoices at january will have a determined value. On February, i will only update the value of the invoice type that must be modified, All the others will keep the previous value for February if there is no modification. And that will occurs for the subsequent months.