glowUpload(options) Filter issue.

Hi All,

I am trying to apply filter glow upload.

 Type 1:  uploadButton.glowUpload({
                                  fileFilter: '{title : "Png files", extensions : "PNG"}',

 Type 2:  uploadButton.glowUpload({
                                  fileFilter:  {title : "Png files", extensions : "png"},

The default filter is sull as per the document.

When we apply filter like type one or type 2, the control itself not working, no error log as well, Kindly help me how implement this filter for "GIF,JPEG and PNG" like.

Thanks.