class MySettings(PropertyGroup):

bpy.types.Scene.my_prop = bpy.props.BoolProperty(update=lambda self, context:
common_update(self, context, 'my_bool_one'))

def common_update(self, context, origin):

    obj = context.object
    scene = context.scene

    for ob in scene.objects:
        if (scene.my_prop == True):
            if ob.name.startswith("Glide"):
                ob.hide = True
           else:
                ob.hide = False  #This will not unhide it. Unhide does not work either!
    else:
          ob.hide = False

class PathSETTINGS(Panel):
   bl_idname = "OBJECT_PT_my_panel"
   bl_label = "My Panel"
   bl_space_type = "VIEW_3D"
   bl_region_type = "TOOLS"
   bl_category = "NewTest"



def draw(self, context):
    obj = context.object
    layout = self.layout
    scene = context.scene
    layout.label("First row")
    row = layout.row(align=True)
    row.alignment = 'EXPAND'
    row = layout.row()
    row = layout.row()
   # row.operator("object.lamp_add(type='HEMI'), text="Add Hemisphere")
    row = layout.row()
    row.prop(scene, "my_prop", text="Hide Object")
    row = layout.row()
    row = layout.row()
    row.prop(scene, "my_enum")

def register():
    bpy.types.Scene.my_prop
    bpy.utils.register_class(PathSETTINGS)
    bpy.utils.register_class(MySettings)

def unregister():
   del bpy.types.Scene.my_prop
   bpy.utils.unregister_class(PathSETTINGS)
    bpy.utils.uregister_class(PathSETTINGS)