Changing labels in GravityExport
A common thing is to change the label for a specific field for the export. You can override the label by hooking into the gfexcel_field_label filter.
The field object is provided as parameter, so you can check for type and stuff programatically.
Filter signature
The complete filter is gfexcel_field_label_{type}_{form_id}_{field_id} , where you replace the curly-braces parts. The field object is provided as a parameter, so you can also check thing programmatically.
Example
In this example we change the value for the label, for field 5 in form 3. In all other cases, we leave the label untouched.
add_filter('gfexcel_field_label', function( $label, GF_Field $field ) {
  if ($field->formId === 3 && $field->id === 5) {  
    return 'Our custom label';  
  }
  return $label;
}, 10, 2);
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