[-lastname] - this parameter will save the input as the last name for the contact within the iService database. Last Name is a standard field that has its own parameter (-lastname), but could also be saved using the -contactProperty parameter. Since every iService database has this field using the -lastname parameter can be more intuitive than using the -contactProperty parameter.
Example: Capture a user's last name
Please enter your last name. <br />
<br />
Email Address: $input -lastname -id'lastname'$
