Issue in custom invoice design - $client.balance = $total

[hsgold2]

Invoice Ninja version is: v11.12.2023.1 (installed in my server).

I have made a new custom invoice and i found a little issue. I want to show in invoice a clients credit balance. I use this variable: $client.credit_balance.
Problem is: $client.credit_balance = $total

Top red => $client.credit_balance
Bottom red => $total
Top blue => $invoice.due_date

Is there any problem or i need to update the settings etc..