How can ı resize thumbnaıl with justifygallery

[fatihyvg]

How can ı resize just thumbnaıl with justifygallery and ı am tring sizeRangeSuffixes but not show on browser when ı small like phone and tablet ı can show but on browser not just how can ı resize thumbail for rowheight:170 as and ı getting this error this.resetImgSrc is not a function

  $("#gallery").justifiedGallery({
        rowHeight: 170,
        maxRowsCount: 23,
        cssAnimation: true,
        captions: true,
        fixedHeight: true,
        margins: 3,
        imagesAnimationDuration: 1000,
        lastRow: 'hide',
        sizeRangeSuffixes: {
            100: '_t', // used with images which are less than 100px on the longest side
            240: '_m', // used with images which are between 100px and 240px on the longest side
            320: '_n', // ...
            640: '_z',
            1024: '_b',
            1600: '_h',
            2048 : '_k'// used which images that are more than 640px on the longest side
        }
    });