[OpenRail Designer CE-2021, Release 1 Update 10 / 10.10.01.03, C#] Speed Scheme Names

Hi, I'm writing AddIn application for OpenRail Designer to annotate and report existing Geometry according local standards. In the case of SpeedTable/SpeedSections/Speed Scheme I’m not able to access additional data important for annotation – column names of particular Speed Schemas. Names are created automatically at time when Speed Scheme is adding and subsequently can be renamed by user (on Fig. to V150).

Can anybody give me advice how I can programmatically access names of these columns?

Thank you in advance.

if (ali.ActiveSpeedTable.SpeedSections.Count() > 0)
{
    sb.Append($"{"Start Station",-25}");
    for (int n = 0; n < ali.ActiveSpeedTable.SpeedSections.ElementAt(0).DesignSpeeds.Count(); n++)
    {
        sb.Append($"{$"Column_{n}_name",-25}");   // Here I need real names of columns, for instance mentioned V150
                        }
    sb.AppendLine("");
    foreach (SpeedSection speedSection in ali.ActiveSpeedTable.SpeedSections)
    {
        sb.Append($"{$"{speedSection.Station} m",-25}");
        foreach (DesignSpeed designSpeed in speedSection.DesignSpeeds)
        {
            sb.Append($"{$"{designSpeed.Start*3.6} km/h",-25}");
        }
        sb.AppendLine("");
    }
}

And result is: