TYPO3-Browser: datetime depending on value

plugin.tx_browser_pi1 {
  ... 
  views {
    list {
      1 {
        ...
        select (
          ..., my_table.datetime, my_table.another_field , ...
        )
        ...
        my_table {
          ...
          datetime = COA
          datetime {
              // Effect in case of a proper datetime
            10 = TEXT
            10 {
              if {
                isTrue = ###MY_TABLE.DATETIME###
              }
              value = ###MY_TABLE.DATETIME###
              strftime = (see PHP manual strftime)
            }
              // Effect in case of an empty datetime
            20 = TEXT
            20 {
              if {
                isFALSE = ###MY_TABLE.DATETIME###
              }
              value = not ready yet - ###MY_TABLE.ANOTHER_FIELD###
            }
            ...
          }
          ...