title: Can't calculate values
body: <pre><code>$invoiceTotal = $settings['Setting']['currency'] . $thisInvoice['Invoice']['invoice_total'];
  
  $bedrag = $settings['Setting']['currency'] . number_format($thisInvoice['Payment']['0']['amount'], 2, '.', ',');
  
  $openbedrag = $invoiceTotal - $bedrag;
  
  //$invoiceTotal = 2 
  //$bedrag = 1
  </code></pre>
  
  <p>Why is <code>$openbedrag = $invoiceTotal - $bedrag;</code> not working ?</p>
  
  <p>It is a simple calculation, why it doesn't calculate this variables ?</p>
  
  <p>It outputs 0 -_-'</p>
  
  <p><strong>UPDATE PROBLEM FIXED</strong></p>
  
  <pre><code>$invoiceTotal = $settings['Setting']['currency'].$thisInvoice['Invoice']['invoice_total'];
  $bedrag = $settings['Setting']['currency'].number_format($thisInvoice['Payment']['0']['amount'], 2, '.', ',');
  $openbedrag2 = $thisInvoice['Invoice']['invoice_total'] - $thisInvoice['Payment']['0']['amount'];
  $openbedrag = $settings['Setting']['currency'].$openbedrag2;
  </code></pre>
  
  <p>Currency sets €</p>