Error while posting images to my bucket. (Google cloud storage)

[kc ochibili]

I am trying to post images to my bucket on google cloud storage but i keep getting errors. i dont know if the fault is from the url i'm using 

 I have tried using this url (http://commondatastorage.googleapis.com/bucket/+Image.png) to post images from my app; but i get the "error 1104, the image cannot be posted with the url provided. here is my alc for the bucket:

<?xml version="1.0" ?>

<AccessControlList>

    <Owner>

        <ID>

            00b50024a97592382732e7e69afac5fcba343397379237323e5ebd216831a418023820874872

        </ID>

    </Owner>

    <Entries>

        <Entry>

            <Scope type="AllUsers"/>

            <Permission>

                FULL_CONTROL

            </Permission>

        </Entry>

        <Entry>

            <Scope type="GroupById">

                <ID>

                    00b4903a2853501162e8e89afac5fcba14239486e5ebd216831a419323059585

                </ID>

            </Scope>

            <Permission>

                FULL_CONTROL

            </Permission>

        </Entry>

    </Entries>

</AccessControlList>

any help will be appreciated.

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