blender collection property help

I am unable to get the collection property to work. Any suggestions please as to what i may be doing wrong …

import bpy

class MyCustomProperty(bpy.types.PropertyGroup):
    map = bpy.props.StringProperty()
class MyCustomPropertyCollection(bpy.types.PropertyGroup):
    bl_idname = __name__
    mapCollection = bpy.props.CollectionProperty(type=MyCustomProperty)

class MyPanel(bpy.types.Panel):
    bl_label = "My Panel"
    bl_idname = "my_panel"
    bl_space_type = 'VIEW_3D'
    bl_region_type = 'TOOLS'
    bl_category = "Library Texture List"
    bl_context = "objectmode"
    t_slotList = 1
    def draw(self, context):
        m = bpy.context.scene.maps
        layout = self.layout
        layout.operator("collection.add_map", icon='ZOOMIN', text="")
        for i in enumerate(m.mapCollection):
            a = layout.prop_search(context.scene, str(m.mapCollection[i].map),, "textures", icon='TEXTURE_DATA')
            a.tex_index = i

class dummyOperator(bpy.types.Operator):
    bl_label = "Operator for appending"
    bl_idname = "collection.add_map"
    tex_index = bpy.props.IntProperty()

    def execute(self, context):
        scene_name =[scene_name].maps.mapCollection[self.tex_index].add()
        return {"FINISHED"}

def register():
    bpy.types.Scene.maps = bpy.props.PointerProperty(type = MyCustomPropertyCollection)

def unregister():

if __name__ == "__main__":