var randomCheck:Number = _expression.indexOf( RANDOM );
if( randomCheck != -1 )
{
    _opp = RANDOM;
    var arRandom:Array = _expression.split( STRegularExpressions.reFunctionCall );
    if( arRandom.length > 3 )
    {
        _rval = arRandom[2];
    }
    else
    {
        _rval = "1";
    }