I have created an arrow using SVG
var arrow = gaugeSvg
.path('M 0 0 L 40 -34 L 40 -14 L 80 -14 L 80 14 L 40 14 L 40 34 Z')
.attr({'stroke': 'black', 'fill': 'black', 'enable': 'true'})
.translate(left + width, goalY);
Now I want to drag this arrow vertically. How can it be done?