I have 6 images showing in my itemdetails.aspx the code:

 <asp:Image ID="Image1" CssClass="photo-border" runat="server" ImageUrl='<%# "/images/" + (string)Eval("ImageUrl") %>'
                                AlternateText='<%# (string)Eval("ImageAltText")%>' />
                            <br />
                            <asp:Image ID="Image2" CssClass="photo-border" runat="server" ImageUrl='<%# "/images/" + (string)Eval("ImageUrl1") %>'
                                AlternateText='<%# (string)Eval("ImageAltText")%>' />
                            <br />
                            <br />
                            <asp:Image ID="Image3" CssClass="photo-border" runat="server" ImageUrl='<%# "images/" + (string)Eval("ImageUrl2") %>'
                                AlternateText='<%# (string)Eval("ImageAltText")%>' />
                            <br />
                            <br />
                            <asp:Image ID="Image4" CssClass="photo-border" runat="server" ImageUrl='<%# "images/" + (string)Eval("ImageUrl3") %>'
                                AlternateText='<%# (string)Eval("ImageAltText")%>' />
                            <br />
                            <br />
                            <asp:Image ID="Image5" CssClass="photo-border" runat="server" ImageUrl='<%# "images/" + (string)Eval("ImageUrl4") %>'
                                AlternateText='<%# (string)Eval("ImageAltText")%>' />
                            <br />
                            <br />
                            <asp:Image ID="Image6" CssClass="photo-border" runat="server" ImageUrl='<%# "images/" + (string)Eval("ImageUrl5") %>'
                                AlternateText='<%# (string)Eval("ImageAltText")%>' />

I am not too sure why it only shows ImageUrl1 & 6? Have I not done something here?

Thanks in advance!