TryGetNumberValue addons.cs

 if (suffix == 'u' || suffix == 'U')
{
    if (UInt32.TryParse(strNum, style, NumberFormatInfo.InvariantInfo, out uint u))
    {
        ulong testresult = u * (ulong) multiplier;
        if (testresult > UInt32.MaxValue)
        {
            result = testresult;
        }
        else
        {
            result = (uint) testresult;
        }
        return true;
    }
    else
    {
        result = null;
        return false;
    }
}