Set Data From Javascript

I add a html file on wisej project , the html file have javascript qr code reader ,  I want to readed barcodes set wisej label

I add web methods on wisej form

[WebMethod]
public void Barcode(string barcode)
{
label1.Text = barcode;
}

and I add  this code to send data wisej method in html file

App.Window1.Barcode(code.data);

I’ve been trying for days, but I couldn’t send this data.

Please help this topic

Thanks