You need to create a separate member for each store and assign an ID to that member that matches up to your data. Since your data already has the shop number, I'd recommend using that. When set the properties in the extension you will select the ShopNumber field so QlikView knows to link the IDs in the SVG with the ShopNumber field in your data.
You can set the ID in SVG-edit in the field indicated in the image below. Note that you may need to redraw your SVG so you can have a single object ID for each field. If you use inkscape you can also group objects under the same ID (I'm not sure this is possible with SVG-edit.