public void execute() 
    // -------------<SOL id="a7e66c29-b3b6-4471-8e5d-0f411c4c5a97:___throw__" />
    // -------------<LOS id="a7e66c29-b3b6-4471-8e5d-0f411c4c5a97:___throw__" />
    {
        // ---------<SOL id="a7e66c29-b3b6-4471-8e5d-0f411c4c5a97:___body___" />
    	ObjectOfClass owner = galleryOwner.val();
    	IAssociationEndInstance<PictureFromGallery> gallery = ((House) owner).gallery;    	
    	PictureFromGallery pfg = picture.val();
    	pfg.moveWithinGallery(gallery, position.val());
        // ---------<LOS id="a7e66c29-b3b6-4471-8e5d-0f411c4c5a97:___body___" />
    }