Multiple placeholders from database in text field

You can certainly use multiple fields. First get the current item, and then get each field that you want. Something like this:

$w.onReady( () => {
   $w("#dynamicDataset").onReady( () => {
      let item = $w("#dynamicDataset").getCurrentItem();
      let field1 = item.field1;
      let field2 = item.field2;
      $w("#text569").text = "DIT WIL JE DOEN IN " +  field1 + " " + field2 ;
   } );
} );