import bpy
from bpy.props import EnumProperty

def updateEnumParameter(self,context):
    print(self.my_axis)

class cls_IntFloatString(bpy.types.PropertyGroup):
    axis_types = [
                ("0","None","None"),
                ("1","smile","smile"),
                ("2","content","content"),
                ("3","dizzy","dizzy"),
                ("4","cat","cat"),
                ("5","girl","girl"),
                ("6","yuck","yuck"),
                ("7","macho","macho"),
                ("8","pixel","pixel"),
                ("9","charming","charming"),
                ("10","cry","cry"),
                ("11","ouch","ouch"),
                ("12","ultraman","ultraman")
                ]
    my_axis= EnumProperty(name="My Face", description="The axis that will be relayed to the target.", default="0", items=axis_types, update=updateEnumParameter)

bpy.utils.register_class(cls_IntFloatString)

# Add these properties to every object in the entire Blender system (muha-haa!!)
bpy.types.Object.My_List_Index = bpy.props.IntProperty(min= 0,default= 0)
bpy.types.Object.My_List = bpy.props.CollectionProperty(type=cls_IntFloatString)

class IntFloatStringPanel(bpy.types.Panel):
    bl_label = "Int Float String"
    bl_idname = "OBJECT_PT_hello"
    bl_space_type = "PROPERTIES"
    bl_region_type = "WINDOW"
    bl_context = "object"

    def draw(self, context):
        layout = self.layout

        ### context.object.My_List is never populated ###
        obj = context.object
        l = len(obj.My_List)

        if l > 0:
            #layout.label(text="Hello World")
            entry = obj.My_List[obj.My_List_Index]

            box1 = layout.box()
            row1 = box1.row()
            row1.label(" Label:", icon='INFO')

            # Display properties for each type.
            box1.prop(entry, 'my_axis')
        else:
            layout.label(text="Hello World")
            # This list is zero length, so let's add one.
            collection = obj.My_List
            collection.add()


def register():
    bpy.utils.register_class(IntFloatStringPanel)


def unregister():
    bpy.utils.unregister_class(IntFloatStringPanel)


if __name__ == "__main__":
    register()