If you want to print user name who is login into SAP Business one while printing Crystal Report or Layout for SAP Business one crystal Report imported into SAP Business One.
Follow following steps:
1. Create Parameter with name printbyusername@ of String type as Static
Follow following steps:
1. Create Parameter with name printbyusername@ of String type as Static
2. Change Optional Prompt to true
3. Then Use it on design as drag and drop to position where you want to print Login User Name