Advanced branching setting custom field

Molly Hopper

I am working on creating work items in an epic using automation. The epic has a custom field "Matrix" that is a multi-select. For each selection we make a new work item using a branch. That is working fine. I've set the variable name as Matrix. 

I need to set the matrix custom field in the newly created work item to be the single matrix value used to create the work item from the "For Each:", rather than all that are listed in the epic's field. I think I need to use the the additional fields box, but I'm unsure of the appropriate JSON syntax. I get an error message when using the below option.   

Trudy P Claspill

Hello @Molly Hopper 

First, when creating a variable it is best to use a name for the variable that does not match any field name to avoid confusion about whether the reference is trying to get data from the field or from the variable. I like to preface my variables with "var"; i.e. varMatrix.

Second, there is a reference document that shows how to use JSON to set a variety of field types. For a Select List field the format is:

https://support.atlassian.com/cloud-automation/docs/advanced-field-editing-using-json/#Single-select-custom-field

{
  "fields": {
"customfield_11449" : { "value": "option3" }
  }
}

 So for your case it would be (with the variable name change I recommended):

{
  "fields": {
    "Matrix" : { "value": "{{varMatrix}}" }
  }
}

Give that a try and let us know if it works.