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I am using the WooCommerce plugin for a payment gateway . On my site the user can create their own design on canvas after finishing for the WooTheme named Canvas. After he finished a design that image , I am saving into an image/screenshot into the database. When the user clicks " add to cart ", I have to show that user designed image by user as a product in the cart. Any body have any idea how to do it. I tried out using filter hooks but not getting anything. How will I customize the following hook filter?

add_filter( 'filter_name', 'your_function_name' );
function your_function_name( $variable ) {
    return $variable;
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@kaiser From next time i will take care all those thing's. –  Sanjay Nakate Oct 22 '13 at 14:38

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