Searching DI API Property for column text in marketing document

Hi,

I am searching the property for entering information into the column rdr1.text.

I found the following information in the help file:

ItemDetails Sets or returns the item details in the marketing document line.

Field name: Text.

Length: 16 characters.

Text Returns the text property.

Field name: text.

Both properties are not working because the second one is a read only field.

Thanks and Regards Chris