What are the parameters for the GlideDialogWindow callback function?

[will_smith]

I am having problems with this callback function in the GlideDialogWindow as I cannot figure out what it's returning. I am a new admin/developer in ServiceNow needing some help from the community. This took me 2 weeks to get sorted out, but I finally have it writing to the comments field successfully. Is this returning the sys_id of the username? I'm looking for it to return the username given in the form. Thank you in advance for your help.

function newCredentialForm(){
   var tableName = g_form.getTableName();
   //Get the values from the Incident Table
   var comments = g_form.getValue('comments');
   var work_notes = g_form.getValue('work_notes');
   var short_description = g_form.getValue('short_description');
   var num = g_form.getValue('number');
   //Create and open the dialog form
   var dialog = new GlideDialogForm('Create Temporary Credential', 'u_temp_credential', callbackFunct);
   dialog.setSysID(-1); //Pass in sys_id to edit existing record, -1 to create new record
   dialog.addParm('sysparm_view', 'credential_view'); //Use the Credential view of the form
   dialog.addParm('sysparm_form_only', 'true'); //Remove related lists
   dialog.render(); //Open the dialog window
   }
//this is my callback function.   All I am doing is taking the username and using the setValue to place it in the additional comments field.
function callbackFunct(action, sys_id, table, displayValue) {
   g_form.setValue('comments',sys_id,'u_temp_credential','u_username');
}

[bernyalvarado]

Thanks William!

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What are the parameters for the GlideDialogWindow callback function?

Thanks for your support!

Berny