Captcha show on custom form

Good day,

I would like to use the captcha with a ticketsysstem plugin.
aAdd the following code to the end of the file in functions.php

– Add the following code and replace form with the class to the end of the file

function add_my_forms( $forms ) {
   $forms['orbisius_support_tickets'] = "TICKET";
   return $forms;
}
add_filter( 'cptch_add_form', 'add_my_forms' );

I have activated it under settings.
I do not see a captcha

how do I find out what I should write in there here is a section of the form

              <div class="form-group">
                            <label class="col-md-3 control-label"
                                   for="orbisius_support_tickets_data_message">
                                <?php _e( 'Message', 'orbisius_support_tickets' ); ?></label>
                            <div class="col-md-9">
                                <textarea id="orbisius_support_tickets_data_message"
                                                                  <div class="form-group">
                            <label class="col-md-3 control-label"
                                   for="orbisius_support_tickets_data_message">
                                <?php _e( 'Message', 'orbisius_support_tickets' ); ?></label>
                            <div class="col-md-9">
                                <textarea id="orbisius_support_tickets_data_message"
                                          class="orbisius_support_tickets_data_message form-control orbisius_support_tickets_full_width"
                                          name="orbisius_support_tickets_data[message]"
                                          placeholder="Please enter the message here..."
                                          rows="<?php echo $row_num; ?>"><?php esc_attr_e( $data['message'] ); ?></textarea>
                            </div>
                        </div>