Connection string returns null - help

[effendi]

I have the following insercommand in my asp page.

<asp:SqlDataSou rce ID="SqlDataSour ce1" runat="server"
ConnectionStrin g="
<%$ ConnectionStrin gs:eventsConnec tionString %>"
SelectCommand=" SELECT registration.* FROM registration"

InsertCommand=" INSERT INTO registration(ev entName,
firstName, lastName,instNa me,faculty, jobTitle,email,
phoneNumber,deg reeName, yearOfStudy,int erestOthers,eve ntSource,
eventOthersDeta il, resCountry) VALUES
(@eventName,@fi rst,@lastName,@ instName,@facul ty,@jobTitle,@e mail,@phoneNumb *er,@degreeName ,@yearOfStudy,@ interestOthers, @eventSource,@e ventOthersDetai l*,@resCountry) "

ProviderName="< %$ ConnectionStrin gs:eventsConnec tionString.Prov iderName

%>">
<insertparamete rs>
<asp:formparame ter name="eventName " formfield="even tName" />
<asp:formparame ter name="firstName " formfield="firs tName" />
<asp:formparame ter name="lastName" formfield="last Name" />
<asp:formparame ter name="instName" formfield="inst Name" />
<asp:formparame ter name="faculty" formfield="facu lty" />
<asp:formparame ter name="jobTitle" formfield="jobT itle" />
<asp:formparame ter name="email" formfield="emai l" />
<asp:formparame ter name="phoneNumb er" formfield="phon eNumber" />
<asp:formparame ter name="degreeNam e" formfield="degr eeName" />
<asp:formparame ter name="yearOfStu dy" formfield="year OfStudy" />
<asp:formparame ter name="interestO thers" formfield="inte restOthers" />

<asp:formparame ter name="eventSour ce" formfield="even tSource" />
<asp:formparame ter name="eventOthe rsDetail"
formfield="even tOthersDetail" />
<asp:formparame ter name="resCountr y" formfield="resC ountry" />
</insertparameter s>
</asp:SqlDataSour ce>
The problem is none of the values return anything. Is my formparameter
wrongly defined?
Thanks in advance.