I am using Jaspersoft® Studio 6.6.0, Community Edition. I have added a barcode to my report and selected the QR Code option. I have assigned a parameter to the Code Expression. No matter what value I supply for the parameter, the qrcode image doesn't change in Preview Mode. What do I need to do, please, to fix this? I have searched for answers but can't find a definitive solution. I would very much appreciate a step-by-step process of what I need to do.