MaxCharacters Property
Returns a Long containing the maximum number of characters allowed in the ListColumn object if the Type property is set to xlListDataTypeText or xlListDataTypeMultiLineText. Returns -1 for columns whose Type property is set to a non-text value. Read-only Long.
This property is used only for lists that are linked to a SharePoint site.
expression.MaxCharacters
expression Required. An expression that returns a ListDataFormat object.
Remarks
In Microsoft Excel, you cannot set any of the properties associated with the ListDataFormat object. You can set these properties, however, by modifying the list on the SharePoint site.
Example
The following example displays the setting of the MaxCharacters property for the third column of a list in Sheet1 of the active workbook.
Dim wrksht As Worksheet
Dim objListCol As ListColumn
Set wrksht = ActiveWorkbook.Worksheets("Sheet1")
Set objListCol = wrksht.ListObjects(1).ListColumns(3)
Debug.Print objListCol.ListDataFormat.MaxCharacters