Detecting RTL and LTR TLF text

Hi All,

I have set RTL in the preferences panel.

I need to test RTL and LTR 'direction' setting. It reports Null if it has not been explicitly set because it inherits the LTR.  I am trying to set LTR explicitly when I initialize the text and put it on the stage or at minimum, test for null and force it.

import flash.text.*;

import flash.text.TextFormat;

if (txtField.direction == null) {
        trace("It traces Null");// It traces Null 
        txtField.direction = LTR;
}

RangeError: Property direction value LTR is out of range
        at flashx.textLayout.property::Property$/defaultErrorHandler()
        at flashx.textLayout.property::EnumStringProperty/setHelper()
        at flashx.textLayout.formats::TextLayoutFormatValueHolder/setCoreStyle()
        at flashx.textLayout.formats::TextLayoutFormatValueHolder/set direction()
        at flashx.textLayout.elements::FlowElement/set direction()
        at fl.text::TLFTextField/set direction()
        at Code::Page1/textOverFlow()
        at Code::Page1/_Topic()
        at Code::Page1()

I have tried to add this:
import flashx.textLayout.formats;

Then it reports:

Page1.as, Line 16 1172: Definition flashx.textLayout:formats could not be found.