[[!FormIt?
&hooks=`email,redirect,FormItAutoResponder`
&emailTpl=`sentEmailTpl_appt`
&emailSubject=`Contact Form`
&emailTo=`........`
&redirectTo=`12`
&validate=`firstname:required:minLength=^2^,
lastname:required,
contact_email:email:required,
patient:required,
appt_day:required,
appt_time:required,
phone:required:maxLenth=^12^`
&fiarTpl=`autoResponseTpl_appt`
&fiarSubject=`Online Appointment Request`
&fiarToField=`contact_email`
&fiarFrom=`......`
&fiarFromName=`.......`
]]
<input type="hidden" name="appt_day:required" value="" />
<label>Preferred day of the week?[[!+fi.error.appt_day]]</label>
<input type="checkbox" name="appt_day:required" value="monday" [[!+fi.appt_day:FormItIsChecked=`monday`]] > Monday
<input type="checkbox" name="appt_day:required" value="tuesday" [[!+fi.appt_day:FormItIsChecked=`tuesday`]] > Tuesday
<input type="checkbox" name="appt_day:required" value="wednesday" id="wednesday" [[!+fi.appt_day:FormItIsChecked=`wednesday`]] > Wednesday <br />
<input type="checkbox" name="appt_day:required" value="thursday" id="thursday" [[!+fi.appt_day:FormItIsChecked=`thursday`]] > Thursday
<input type="checkbox" name="appt_day:required" value="friday" id="friday" [[!+fi.appt_day:FormItIsChecked=`friday`]] > Friday
<input type="checkbox" name="appt_day:required" value="no preference" id="none" [[!+fi.appt_day:FormItIsChecked=`no preference`]] > No Preference
<input name="appt_day[]" type="hidden" /> <input name="appt_day[]" type="checkbox" [[!+fi.appt_day:FormItIsChecked=`Monday`]] value="Monday" />Monday<br /> <input name="appt_day[]" type="checkbox" [[!+fi.appt_day:FormItIsChecked=`Tuesday`]] value="Tuesday" />Tuesday<br /> <input name="appt_day[]" type="checkbox" [[!+fi.appt_day:FormItIsChecked=`Wednesday`]] value="Wednesday" />Wednesday<br /> <input name="appt_day[]" type="checkbox" [[!+fi.appt_day:FormItIsChecked=`Thursday`]] value="Thursday" />Thursday<br /> <input name="appt_day[]" type="checkbox" [[!+fi.appt_day:FormItIsChecked=`Friday`]] value="Friday" />Friday<br />
Day: [[+appt_day.0:notempty=`[[+appt_day.0]]`]] [[+appt_day.1:notempty=`[[+appt_day.1]]`]] [[+appt_day.2:notempty=`[[+appt_day.2]]`]] [[+appt_day.3:notempty=`[[+appt_day.3]]`]] [[+appt_day.4:notempty=`[[+appt_day.4]]`]]

<input type="checkbox" name="appt_day:required" value="monday" [[!+fi.appt_day:FormItIsChecked=`monday`]] > Monday
<input type="checkbox" name="appt_day[]" value="Monday" [[!+fi.appt_day:FormItIsChecked=`Monday`]] />Monday
[[!FormIt? !!! Remember to inset the other parameters as well here !!! &validate=`appt_day:required` ]]
I’ve made all the appropriate changes, unfortunately the ’Day of the week’ is still preventing the form from submitting. 
<?php
/**
* Custom output filter that returns checked="checked" if the value is set
*
* @package formit
*/
$output = ' ';
if ($input == $options) {
$output = ' checked="checked"';
}
if (strpos($input,',') !== false) {
$input = explode(',',$input);
if (in_array($options,$input)) {
$output = ' checked="checked"';
}
}
return $output;<?php
/**
* Custom output filter that returns checked="checked" if the value is set
*
* @package formit
*/
$output = ' ';
if ($input == $options) {
$output = ' selected="selected"';
}
if (strpos($input,',') !== false) {
$input = explode(',',$input);
if (in_array($options,$input)) {
$output = ' selected="selected"';
}
}
return $output;[[!FormIt?
&hooks=`email,redirect,FormItAutoResponder`
&emailTpl=`sentEmailTpl_appt`
&emailSubject=`Contact Form`
&emailTo=`.......`
&redirectTo=`12`
&validate=`firstname:required:minLength=^2^,
lastname:required,
contact_email:email:required,
patient:required,
appt_day:required,
appt_time:required,
phone:required:maxLenth=^12^`
&fiarTpl=`autoResponseTpl_appt`
&fiarSubject=`Online Appointment Request`
&fiarToField=`contact_email`
&fiarFrom=`.......`
&fiarFromName=`.......`
]]<strong> First, Last Name: [[+firstname]] [[+lastname]] <br /> Phone Number: [[+phone]] <br /> Email: [[+contact_email]] <br /> Existing Patient: [[+patient]]<br /> Preferred time of day: [[+appt_time]] <br /> Preferred day of week: [[+appt_day.0:notempty=`[[+appt_day.0]]`]] [[+appt_day.1:notempty=`[[+appt_day.1]]`]] [[+appt_day.2:notempty=`[[+appt_day.2]]`]] [[+appt_day.3:notempty=`[[+appt_day.3]]`]] [[+appt_day.4:notempty=`[[+appt_day.4]]`]] <br /> Preferred Office: [[+office]] <br /> Additional Comments: [[+comments]] </strong>
. I’m running Revolution 2.0.8-pl (traditional)<form action="[[~[[*id]]]]" method="post" class="form">
<input type="hidden" name="nospam:blank" value="" />
<label for "firstname">First name of patient
<span class="error">[[!+fi.error.firstname]]</span>
</label>
<input type="text" name="firstname" id="firstname"
minlength="2" value="[[!+fi.firstname]]" />
<label for="lastname">Last name of patient
<span class="error">[[!+fi.error.lastname]]</span>
</label>
<input type="text" name="lastname" id="lastname" value="[[!+fi.lastname]]" />
<label for="contact_email">
Email:
<span class="error">[[!+fi.error.contact_email]]</span>
</label>
<input type="text" name="contact_email" id="contact_email" value="[[!+fi.contact_email]]" />
<label for="phone">
Phone Number <small>Example: 555-555-5555</small>
<span class="error">[[!+fi.error.phone]]</span>
</label>
<input type="text" name="phone" maxlength="12" id="phone" value="[[!+fi.phone]]" />
<input type="hidden" name="patient:required" value="" />
<label for "firstname">Are you an existing patient?
<span class="error">[[!+fi.error.patient]]</span>
</label>
<input type="radio" name="patient:required" id="patient" value="yes"[[!+fi.patient:yes]] />Yes
<input type="radio" name="patient:required" id="patient" value="no"
[[!+fi.patient:no]] />No
<br />
<input type="hidden" name="appt_time:required" value="" />
<label for "appt_time">Preferred time of day?
<span class="error">[[!+fi.error.appt_time]]</span></label>
<input type="radio" name="appt_time:required" id="appt_time" value="morning"[[!+fi.appt_time:morning]] />Morning
<input type="radio" name="appt_time:required" id="appt_time" value="evening"[[!+fi.appt_time:evening]] />Evening
<input type="radio" name="appt_time:required" id="appt_time" value="no preference"[[!+fi.appt_time:no preference]] />No preference
<br />
<input type="hidden" name="appt_day:required" value="" />
<label>Preferred day of the week?[[!+fi.error.appt_day]]</label>
<input name="appt_day[]" type="hidden" />
<input type="checkbox" name="appt_day[]" value="Monday"
[[!+fi.appt_day:FormItIsChecked=`Monday`]] > Monday
<input type="checkbox" name="appt_day[]" value="Tuesday" [[!+fi.appt_day:FormItIsChecked=`Tuesday`]] > Tuesday
<input type="checkbox" name="appt_day[]" value="Wednesday" id="wednesday" [[!+fi.appt_day:FormItIsChecked=`Wednesday`]] > Wednesday <br />
<input type="checkbox" name="appt_day[]" value="Thursday" id="thursday" [[!+fi.appt_day:FormItIsChecked=`Thursday`]] > Thursday
<input type="checkbox" name="appt_day[]" value="Friday" id="friday" [[!+fi.appt_day:FormItIsChecked=`Friday`]] > Friday
<input type="checkbox" name="appt_day[]" value="No preference" id="none" [[!+fi.appt_day:FormItIsChecked=`No preference`]] > No Preference
<br />
<input type="hidden" name="office:required" value="" />
<label for "office">Preferred office location?
<span class="error">[[!+fi.error.office]]</span></label>
<input type="radio" name="office:required" id="office" value="folsom"[[!+fi.office:folsom]] />Folsom
<input type="radio" name="office:required" id="office" value="rocklin"[[!+fi.office:rocklin]] />Rocklin
<label for="text">
Additional Comments
<span class="error">[[!+fi.error.comments]]</span>
</label>
<textarea name="comments" id="comments" cols="40" rows="6" value="[[!+fi.comments]]">[[!+fi.comments]]</textarea>
<input type="submit" name="submit" value="submit" class="submit_btn" />
<input type="reset" name="reset" value="reset" class="reset_btn" />
</form><form action="[[~[[*id]]]]" method="post" class="form"> <input type="hidden" name="nospam:blank" value="" /> <label for="firstname">First name of patient <span class="error">[[!+fi.error.firstname]]</span> </label><br /> <input type="text" name="firstname" id="firstname" value="[[!+fi.firstname]]" /><br /> <label for="lastname">Last name of patient <span class="error">[[!+fi.error.lastname]]</span> </label><br /> <input type="text" name="lastname" id="lastname" value="[[!+fi.lastname]]" /><br /> <label for="contact_email">Email: <span class="error">[[!+fi.error.contact_email]]</span> </label><br /> <input type="text" name="contact_email" id="contact_email" value="[[!+fi.contact_email]]" /><br /> <label for="phone">Phone Number <small>Example: 555-555-5555</small> <span class="error">[[!+fi.error.phone]]</span> </label><br /> <input type="text" name="phone" maxlength="12" id="phone" value="[[!+fi.phone]]" /><br /> <p><strong>Are you an existing patient? <span class="error">[[!+fi.error.patient]]</span></strong></p> <input type="hidden" name="patient[]" value="" /> <input type="radio" name="patient[]" value="Yes" id="patient-Yes" [[!+fi.patient:FormItIsChecked=`Yes`]] /> <label for="patient-Yes">Yes</label> <br /> <input type="radio" name="patient[]" value="No" id="patient-No" [[!+fi.patient:FormItIsChecked=`No`]] /> <label for="patient-No">No</label> <br /> <p><strong>Preferred time of day? <span class="error">[[!+fi.error.appt_time]]</span></strong></p> <input type="hidden" name="appt_time[]" value="" /> <input type="radio" name="appt_time[]" value="Morning" id="Morning" [[!+fi.appt_time:FormItIsChecked=`Morning`]] /> <label for="Morning">Morning</label> <br /> <input type="radio" name="appt_time[]" value="Evening" id="Evening" [[!+fi.appt_time:FormItIsChecked=`Evening`]] /> <label for="Evening">Evening</label> <br /> <input type="radio" name="appt_time[]" value="No preference" id="appt-time-No-preference" [[!+fi.appt_time:FormItIsChecked=`No preference`]] /> <label for="appt-time-No-preference">No preference</label> <br /> <p><strong>Preferred day of the week? <span class="error">[[!+fi.error.appt_day]]</span></strong></p> <input type="hidden" name="appt_day[]" value="" /> <input type="checkbox" name="appt_day[]" value="Monday" id="Monday" [[!+fi.appt_day:FormItIsChecked=`Monday`]] /> <label for="Monday">Monday</label> <br /> <input type="checkbox" name="appt_day[]" value="Tuesday" id="Tuesday" [[!+fi.appt_day:FormItIsChecked=`Tuesday`]] /> <label for="Tuesday">Tuesday</label> <br /> <input type="checkbox" name="appt_day[]" value="Wednesday" id="Wednesday" [[!+fi.appt_day:FormItIsChecked=`Wednesday`]] /> <label for="Wednesday">Wednesday</label> <br /> <input type="checkbox" name="appt_day[]" value="Thursday" id="Thursday" [[!+fi.appt_day:FormItIsChecked=`Thursday`]] /> <label for="Thursday">Thursday</label> <br /> <input type="checkbox" name="appt_day[]" value="Friday" id="Friday" [[!+fi.appt_day:FormItIsChecked=`Friday`]] /> <label for="Friday">Friday</label> <br /> <input type="checkbox" name="appt_day[]" value="No preference" id="appt-day-No-preference" [[!+fi.appt_day:FormItIsChecked=`No preference`]] /> <label for="appt-day-No-preference">No preference</label> <br /> <p><strong>Preferred office location? <span class="error">[[!+fi.error.office]]</span></strong></p> <input type="hidden" name="office[]" value="" /> <input type="radio" name="office[]" value="Folsom" id="Folsom" [[!+fi.office:FormItIsChecked=`Folsom`]] /> <label for="Folsom">Folsom</label> <br /> <input type="radio" name="office[]" value="Rocklin" id="Rocklin" [[!+fi.office:FormItIsChecked=`Rocklin`]] /> <label for="Rocklin">Rocklin</label> <br /> <label for="comments">Additional Comments <span class="error">[[!+fi.error.comments]]</span> </label><br /> <textarea name="comments" cols="40" rows="6" id="comments">[[!+fi.comments]]</textarea><br /> <input type="submit" name="submit" value="submit" class="submit_btn" /> <input type="reset" name="reset" value="reset" class="reset_btn" /> </form>