Online Documentation for Advanced Data Export .NET
public SqlManager.QExport.Collections.StringListCollection ColumnsPrecision
The ColumnsPrecision property determines the column precisions in the exported file. The name for each field is set by a separate string which looks as follows
where <field_name> is the name of one of the source fields, and <column_precision> is the column precision. The <field_name> is case-insensitive, and the spaces around the mark of equality are not taken into consideration.