You can't pass parameters to methods. Only properties and parameter-less methods are supported.
This is 'by design' to prevent users from coding in templates, and force them to create proper view models.
You'll have to create parameter-less method or property that invokes GetFormattedAttributeValue(string) method with appropriate parameter.
As a side note: You can use format strings when you display dates or numbers:
This reply was generated on [Date:yyyy"/"MM"/"dd HH:mm]
Format strings work on anything that implements standard IFormattable interface.