The DataToEncode property is a string value in IDAutomation Barcode Fonts, Components and Applications that is encoded directly into the barcode symbol itself. The data to be encoded must first be converted if it is not text or a string value, and in most languages, methods exist that can accomplish this.
For example, the following Crystal Reports script code converts ID_Number to a string for encoding in a Code 128 Barcode Font with the Crystal Reports UFL.
IDAutomation_Code128 (cStr( {Table1.ID_Number},0 ) )