redefines a single configuration property (or a object with properties)
| property | string| WebixViewConfig | the property name or a object with properties that need redefining |
| value | any | the new property value (has to be specified when defining the property as a string) |
// changes the name of the downloaded file
$$('pdfviewer').define("downloadName","NewFile1");
// changes multiple properties at once
$$('pdfviewer').define({
downloadName:"NewFile1",
toolbar:"toolbar1"
});