Title: Problem with parameter substitution
Last modified: February 5, 2022

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# Problem with parameter substitution

 *  Resolved [zauberharfe](https://wordpress.org/support/users/zauberharfe/)
 * (@zauberharfe)
 * [4 years, 3 months ago](https://wordpress.org/support/topic/problem-with-parameter-substitution/)
 * Hi,
    In a markup template I’m using a field-level substitution parameter: [+terms:
   attachment_category(slug),single+] following the examples given in the documentation.
 * This had been working fine until Ver. 2.97, but not with 2.98 — the field (slug)
   is ignored. The same problem seems to exist also with (term_id).
 * Has there been any change in the handling of this form of substitution parameters?

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [David Lingren](https://wordpress.org/support/users/dglingren/)
 * (@dglingren)
 * [4 years, 3 months ago](https://wordpress.org/support/topic/problem-with-parameter-substitution/#post-15339475)
 * Thanks for your report. My investigation revealed that a change I made in version
   2.98 introduced a defect that accounts for this issue.
 * I have uploaded a new MLA Development Version dated 20220207 that contains a 
   fix for your issue. You can find step-by-step instructions for using the Development
   Version in this earlier topic:
 * [PHP Warning on media upload with Polylang](https://wordpress.org/support/topic/php-warning-on-media-upload-with-polylang/#post-9625341)
 * Once the Development Version is installed you can rerun your `terms:` tests. 
   The updated code will be part of my next MLA version, but in the interim it would
   be great if you could install the Development Version and let me know if it works
   for you. Thanks for uncovering and reporting this MLA defect.
 *  Thread Starter [zauberharfe](https://wordpress.org/support/users/zauberharfe/)
 * (@zauberharfe)
 * [4 years, 3 months ago](https://wordpress.org/support/topic/problem-with-parameter-substitution/#post-15341935)
 * Hi, David,
    I tested the development version, and found it working without any
   problem. Thank you for your quick support.
 *  Plugin Author [David Lingren](https://wordpress.org/support/users/dglingren/)
 * (@dglingren)
 * [4 years, 3 months ago](https://wordpress.org/support/topic/problem-with-parameter-substitution/#post-15361255)
 * I have released MLA version 2.99, which contains the fixes developed for this
   topic.
 * I am marking the topic resolved, but please update it if you have any problems
   or further questions regarding the changes. Thanks for bringing the MLA defect
   to my attention.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Problem with parameter substitution’ is closed to new replies.

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 * 3 replies
 * 2 participants
 * Last reply from: [David Lingren](https://wordpress.org/support/users/dglingren/)
 * Last activity: [4 years, 3 months ago](https://wordpress.org/support/topic/problem-with-parameter-substitution/#post-15361255)
 * Status: resolved