Sqldatasource And Formview Insert Problem

I m trying to INSERT a record to my Consultants table using sqldatasource and formview:

here is my sqldatasource code:


<asp:SqlDataSource ID="sqlDS1" runat="server" ConnectionString="<%$ ConnectionStrings:myDB %>"InsertCommand="INSERT INTO [Consultants] ([firstName],[lastName],[skillCategoryID],[resourceManagerID],[AMgroupID],[skillSet],[statusID],[location],[comments],[profile],[isAvailable],[dateModified],[focusID])

VALUES (@FNAME, @LASTNAME, 1, @RESOURCEMANAGERID, @AMGROUPID, @SKILLSET, @STATUSID, @LOCATION,@COMMENTS,@PROFILE,@ISAVAILABLE,getdate(),1)">



<InsertParameters>
     <asp:FormParameter FormField="txtFName" Name="FNAME" />
     <%--other parameters--%>
</InsertParameters>

</asp:SqlDataSource>


now in my formview i have this:

<asp:FormView DefaultMode="Insert" ID="FormView1" runat="server" DataSourceID="sqlDS1" DataKeyNames="id">


<table border="0" cellspacing="5" cellpadding="0">
<tr>
  <td class="blacktextbold">First Name:</td>
  <td class="blacktext"><asp:TextBox ID="txtFName" CssClass="txtfield" Width="200" runat="server" Text="<% #Bind('firstName')%>" />
 <asp:RequiredFieldValidator ControlToValidate="txtFName" runat="server" ValidationGroup="gpInsert" ErrorMessage="Required Field" Display="Dynamic" CssClass="redtextsmallbold" />
 </td>
</tr>
</table>

THE PROBLEM:
no matter what i put the txtFName field its ALWAYS null and i get INSERT error as column firstName cant accept NULL
any ideas? ur help would be appreciated