I have a requirement for updating two picklist value if a checkbox is ticked.

  1. Feedback__c is one object which has Status__c and Resolution__c picklists.
  2. Feedback_Comments__c is another that will have a trigger and the checkbox.

If checkbox in Feedback_Comments__c is ticked then status in Feedback__c should be set to 'Closed' and Resolution to 'Fixed'.

I'm new to triggers. Following is my code.

trigger UpdateStatusResolution on Feedback_Comment__c (before insert) {
   for (Feedback_Comment__c fc: Trigger.new) {
        if(fc.Comment_closes_Feedback__c=true ) 
         Feedback__c.Status__c = 'Closed';
         Feedback__c.Resolution__c = 'Fixed';

Error: Compile Error: Expression cannot be assigned at line -1 column -1

Please guide me.


  • Trigger will point to only one particular object. Is there any relation between those two objects – Sindoora Apr 16 '14 at 7:12
  • Do the two objects have a lookup relation? If tell us the relationship – highfive Apr 16 '14 at 7:12
  • There is a lookup relation from Feedback to Feedback_Comment – MnZ Apr 16 '14 at 7:13
  • 1
    I am not designer of this.... But shouldn't comment be child in this relationship? o.O – Artur Kępczyński Apr 16 '14 at 7:27
  • You can fix the prompted error with @pbattisson's answer. But looks like this should much tricky according to your business problem since you are using before trigger – highfive Apr 16 '14 at 7:29


trigger UpdateStatusResolution on Feedback_Comment__c (before insert) {
    Feedback__c[] feedbacks = new Feedback__c[]{};
    for (Feedback_Comment__c fc: Trigger.new) {
            feedbacks.add(new Feedback__c( Status__c = 'Closed',
                                           Resolution__c = 'Fixed'
                                           id = fc.Feedback__c

       update feedbacks;
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  • Status__c and Resolutions__c fields are in Feedback__c object as per the question. – highfive Apr 16 '14 at 7:23
  • artur-kepczynski. Your code gave me this error.. Error: Compile Error: Invalid field Status__c for SObject Feedback_Comment__c at line 4 column 14. Status and Resolution are dependent picklists. Only if I select "Closed" value, there will be values in Resolution else blank. – MnZ Apr 16 '14 at 7:23
  • Is there a different way to call picklist values – MnZ Apr 16 '14 at 7:25
  • With the update as if(!feedbacks.isEmpty()){ update feedbacks; } } There is no compilation error. Lemme check the code. Thanks – MnZ Apr 16 '14 at 7:28
  • Working perfectly! May I know, what is the use of "id = fc.Feedback__c" and need of creation of Feedback__c[] ? Thanks – MnZ Apr 16 '14 at 7:37

On the line


You are using a single equals sign which is the assignment operator. Change this to == like


And your code should save and compile without that error.

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