load(
  local!datetime,
  local!trigger: false,
  a!formLayout(
    label: "Test Date Time",
    firstColumnContents: {
      a!dateTimeField(
        value: local!datetime,
        saveInto: {
          local!datetime,
          a!save(
            local!trigger,
            true
          )
        },
        validations: {
          if(
            and(
              not(
                isnull(
                  local!datetime
                )
              ),
              local!datetime < now()
            ),
            "Please Enter a Date and Time in the Future",
            null
          )
        }
      )
    },
    buttons: a!buttonLayout(
      primaryButtons: {
        a!buttonWidgetSubmit(
          label: "Submit",
          style: "PRIMARY",
          saveInto: {}
        )
      }
    ),
    validations: {
      if(
        and(
          local!trigger,
          isnull(
            local!datetime
          )
        ),
        "Please Enter a Date and Time",
        null
      )
    }
  )
)