public void ProcessData(IMatrixData mdata, Parameters param1, ref IMatrixData[] supplTables,
ref IDocumentData[] documents, ProcessInfo processInfo)
{
int[] stringCols = param1.GetParam <int[]>("Text columns").Value;
if (stringCols.Length == 0)
{
processInfo.ErrString = "Please select some columns.";
return;
}
mdata.UniqueValues(stringCols);
}