How to add new line while importing text file

Hi experts,

Please find the below screen shot of sample text file which am using to Import.

Screen_shot_1.JPG

Each source field is separated using tab. For Note History field I have added special character ($*@*$). My requirement is to replace this special character with new line (\n) while importing.

Below is the JavaScript condition which I gave in Advance Tab of Import Wizard to replace special character with \n.

target['action']=source['Notes History'].replace("$*@*$","\n");

But this special character is not replacing with new line.

Below screen shot shows that the special character was not replaced by new line.

Screen_shot_2.JPG

 

Can anyone suggest a method to add new line while importing.

Any suggestion is appreciated.

Thanks,

Jithisha