[1.7.10] Overlay won't display

Hi,

So I was trying to display an image on the overlay, I followed the wiki tutorial but the image won't display Can anyone give me an explanation ?

public class GuiRadar extends Gui {

private Minecraft mc;
final ResourceLocation bg = new ResourceLocation("palatest:textures/items/radar.png");

public GuiRadar(Minecraft mc) {
	this.mc = mc;
}

@SubscribeEvent(priority = EventPriority.NORMAL)
public void onRender(RenderGameOverlayEvent event) {
    mc.renderEngine.bindTexture(bg);     
	GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
    GL11.glDisable(GL11.GL_LIGHTING);       
	this.drawTexturedModalRect(10, 10, 0, 0, 16, 16);
      }
}