Answers.Body: <p>You could create your own action for CiviRules to update the field you want. You can find guidelines on creating CiviRules actions <a href="https://docs.civicrm.org/civirules/en/latest/create-your-own-action/" rel="nofollow noreferrer">here</a></p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-10-18T09:15:34.813Z
Answers.Text: Thanks! I'll need to set aside some time to look into this.
Answers.UserDisplayName: Martin
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-10-18T07:09:56.260Z
Answers.LastActivityDate: 2017-10-18T07:09:56.260Z
Answers.UserDisplayName: ErikH - CiviCooP
Body: <p>I've seen a couple of answers to similar questions (e.g. <a href="https://civicrm.stackexchange.com/questions/16807/how-do-i-set-the-value-of-external-id-to-be-the-same-as-a-custom-field">How do I set the value of external_id to be the same as a custom field?</a> and <a href="https://civicrm.stackexchange.com/questions/8818/membership-fee-based-on-custom-field">Membership fee based on custom field</a>).</p>
  
  <p>What I want to do is change the content of a field from www.fubar.com/id= to www.fubar.com/id=[CONTENT OF FIELD]
  I thought this was doable with CiviRules, but it appears there is no option to change the contents of a field based on the value of another field change (I can do other things based on a field value change).</p>
  
  <p>Is this an area where I need to look into custom development? Or am I missing the bleeding obvious?</p>
  
Tags: <civirules><fields>
Title: Set value of one field based on another field
ThreadText: # Set value of one field based on another field
  
  (Asked by: username_0 on 2017-10-18)
  
  I've seen a couple of answers to similar questions (e.g. [How do I set the value of external\_id to be the same as a custom field?](https://civicrm.stackexchange.com/questions/16807/how-do-i-set-the-value-of-external-id-to-be-the-same-as-a-custom-field) and [Membership fee based on custom field](https://civicrm.stackexchange.com/questions/8818/membership-fee-based-on-custom-field)).
  
  What I want to do is change the content of a field from www.fubar.com/id= to www.fubar.com/id=[CONTENT OF FIELD]
  I thought this was doable with CiviRules, but it appears there is no option to change the contents of a field based on the value of another field change (I can do other things based on a field value change).
  
  Is this an area where I need to look into custom development? Or am I missing the bleeding obvious?
  
  **Tags:** civirules, fields
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2017-10-18. Score: 1
  
  You could create your own action for CiviRules to update the field you want. You can find guidelines on creating CiviRules actions [here](https://docs.civicrm.org/civirules/en/latest/create-your-own-action/)
  
  > **Comments:**
  > **username_0**: Thanks! I'll need to set aside some time to look into this.  
  
  ---
  
  