Title: Calculation Doesn't Work
Last modified: September 2, 2016

---

# Calculation Doesn't Work

 *  [Sekander Badsha](https://wordpress.org/support/users/badsha_eee/)
 * (@badsha_eee)
 * [11 years, 11 months ago](https://wordpress.org/support/topic/calculation-doesnt-work-1/)
 * the plugin were asking “2 x ? = 12” I entered 3 and it let me register. Again
   I tried it asked me “4 + ? = 10” I entered 2 and it also let me register.
 * So the thing is clear here, that this plugin is not doing any calculation or 
   validation. Please check

Viewing 1 replies (of 1 total)

 *  [bestwebsoft](https://wordpress.org/support/users/bestwebsoft/)
 * (@bestwebsoft)
 * [11 years, 10 months ago](https://wordpress.org/support/topic/calculation-doesnt-work-1/#post-7868496)
 * Hi Sekander,
 * Captcha will only be displayed and work correctly if you are using standard registration,
   login, comments form pages. In case of using custom forms and pages it will be
   necessary to make changes in them so that captcha could be displayed and work
   correctly.
 * Please follow the instructions below.
    = I would like to add Captcha to custom
   form on my website. How can I do this? = 1. Install the Captcha plugin and activate
   it. 2. Open the file with the form (where you would like to add the captcha to).
   3. Find a place to insert the code for the captcha output. 4. Insert the necessary
   lines:
 *     ```
       if( function_exists( 'cptch_display_captcha_custom' ) ) { echo "<input
       type='hidden' name='cntctfrm_contact_action' value='true' />"; echo
       cptch_display_captcha_custom() } ;
       ```
   
 * If the form is HTML you should insert the line with the PHP tags:
 *     ```
       <?php if( function_exists( 'cptch_display_captcha_custom' ) ) { echo
       "<input type='hidden' name='cntctfrm_contact_action' value='true' />"; echo cptch_display_captcha_custom(); } ?>
       ```
   
 * 5. Then you should add the lines to the function of the entered data checking
   `
   if( function_exists( 'cptch_check_custom_form' ) && cptch_check_custom_form()!
   == true ) echo "Please complete the CAPTCHA."` or `<?php if( function_exists('
   cptch_check_custom_form' ) && cptch_check_custom_form() !== true ) echo "Please
   complete the CAPTCHA." ?>` You could add this line to the variable and display
   this variable in the required place instead of `echo "Please complete the CAPTCHA."`.
   If there is a variable (responsible for the errors output) in the check function,
   this phrase can be added to this variable. If the function returns ‘true’, it
   means that you have entered captcha properly. In all other cases the function
   will return ‘false’.
 * Sincerely,
    BestWebSoft Support Team

Viewing 1 replies (of 1 total)

The topic ‘Calculation Doesn't Work’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/captcha_92b6c9.svg)
 * [Captcha](https://wordpress.org/plugins/captcha/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/captcha/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/captcha/)
 * [Active Topics](https://wordpress.org/support/plugin/captcha/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/captcha/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/captcha/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [bestwebsoft](https://wordpress.org/support/users/bestwebsoft/)
 * Last activity: [11 years, 10 months ago](https://wordpress.org/support/topic/calculation-doesnt-work-1/#post-7868496)