Blank values in $field array when using gforms_field_content filter

Hiya,

I'm attempting to change the HTML output of a form by using the gforms_field_content filter.

However, I cannot find the name and ID values I need to populate my custom HTML.

This is what the var_dump($field) gives me in my filter function:

array
  'adminLabel' => string '' (length=0)
  'adminOnly' => string '' (length=0)
  'allowsPrepopulate' => boolean false
  'defaultValue' => string '' (length=0)
  'description' => string '' (length=0)
  'content' => string '' (length=0)
  'cssClass' => string '' (length=0)
  'errorMessage' => string '' (length=0)
  'id' => int 1
  'inputName' => string '' (length=0)
  'isRequired' => boolean true
  'label' => string 'Dear Sibs' (length=9)
  'noDuplicates' => string '' (length=0)
  'size' => string 'medium' (length=6)
  'type' => string 'post_content' (length=12)
  'postCustomFieldName' => string '' (length=0)
  'displayAllCategories' => boolean false
  'displayCaption' => string '' (length=0)
  'displayDescription' => string '' (length=0)
  'displayTitle' => string '' (length=0)
  'inputType' => string '' (length=0)
  'rangeMin' => string '' (length=0)
  'rangeMax' => string '' (length=0)
  'calendarIconType' => string '' (length=0)
  'calendarIconUrl' => string '' (length=0)
  'dateType' => string '' (length=0)
  'dateFormat' => string '' (length=0)
  'phoneFormat' => string '' (length=0)
  'addressType' => string '' (length=0)
  'defaultCountry' => string '' (length=0)
  'defaultProvince' => string '' (length=0)
  'defaultState' => string '' (length=0)
  'hideAddress2' => string '' (length=0)
  'hideCountry' => string '' (length=0)
  'hideState' => string '' (length=0)
  'inputs' => null
  'nameFormat' => string '' (length=0)
  'allowedExtensions' => string '' (length=0)
  'captchaType' => string '' (length=0)
  'page_number' => string '' (length=0)
  'captchaTheme' => string '' (length=0)
  'simpleCaptchaSize' => string '' (length=0)
  'simpleCaptchaFontColor' => string '' (length=0)
  'simpleCaptchaBackgroundColor' => string '' (length=0)
  'failed_validation' => string '' (length=0)
  'productField' => string '' (length=0)
  'enablePasswordInput' => string '' (length=0)
  'maxLength' => string '' (length=0)
  'enablePrice' => string '' (length=0)
  'basePrice' => string '' (length=0)
  'disableQuantity' => boolean false
  'inputMask' => boolean false
  'inputMaskValue' => string '' (length=0)
  'formId' => int 2
  'pageNumber' => int 1
  'descriptionPlacement' => string 'below' (length=5)
  'conditionalLogicFields' =>
    array
      empty

How do I get those values out?

Thanks,
Phil