>Thank you but it's not removing the line break
>
>I am not sure whether its a line break or enter
>
>Please take a look at the file
>
>http://www.acrisoft.bizland.com/source.txt
>
>It's comma delimeted
>It has a comma in the final of every line
>But in the last line there´s not a comma,
>maybe the customer typed "enter"


Moises, that file has no CR (CHR(13)) in it, it contains only LF (CHR(10)). That is why STRTRAN() doesn't work
If you want to remove it try with CHRTRAN():

Text1 = FILETOSTR("details.csv")
CHRTRAN(text1, CHR(13)+CHR(10), [  ])
STRTOFILE(text1, "details.csv")

But this is a dangerous because CHRTRAN() will convert ANY CHR(13) to empty string and ANY CHR(10) to empty string no matter where they are positioned.