When editing, how can I fill out attributes programatically?

SFGISProgram

I have a use case where I would like the users to add points and lines to a map, but the attributes should be added via code.  I am using an editor widget based on this sample.  ArcGIS API for JavaScript Sandbox    

Let's say I wanted to add a value 1234  to the "issue_id" attribute when the user created a new feature for the operationsPointLayer in the sample code above?  Where in the code would I apply the attribute values?  

Thanks in advance!

SFGISProgram

Close but not quite answered.  Perhaps this is not possible using this approach.  I want not to just format the Popup, but to supply a value.  I tried this but it didn't work.  There doesn't seem to be a 'value'  attribute of a fieldName.

var layerInfos = [{
'featureLayer':featureLayer,
'showAttachments':false,
'showDeleteButton':true,
'fieldInfos':[
{'fieldName':"issue_id", 'isEditable':true, 'label':'<b> IssueId:</b>', 'value': "12313"},
{'fieldName': "issue_name", 'isEditable':true, 'label':'<b>IssueName:</b>'}
]
}];