I have done as was recommended and am now getting a different error: Error Type: Bad Request Error Value: ['Firstname,', 'Lastname,', 'Email,', 'Institution,', 'Telephone,', 'Lastvisit,', 'Passwordvalue,', 'Passworddate,'] Here's the call: <!--#call "add_users(Firstname=Firstname, Lastname=Lastname, Email=Email, Institution=Institution, Telephone=Telephone, Lastvisit='1-20-77', Passwordvalue=Password, Passworddate='1-30-77', Group=Group)"--> And here's the SQL Method: insert into Users (firstname, lastname, email, institution, telephone, lastvisit, passwordvalue, passworddate, groupname) values(<!--#sqlvar Firstname type=string-->, <!--#sqlvar Lastname type=string-->, <!--#sqlvar Email type=string-->, <!--#sqlvar Institution type=string-->, <!--#sqlvar Telephone type=string-->, <!--#sqlvar Lastvisit type=string-->, <!--#sqlvar Passwordvalue type=string-->, <!--#sqlvar Passworddate type=string-->, <!--#sqlvar Group type=string-->)