FTP append

[chmatn1]

Hello,
I am trying to open a connection and append a file to the library using this code:

“FTP
OPEN server
username
password
CD Z80TRN2
ASCII
APPEND C:\lockbox.txt ARPLI”

I put this in a text file and then another batch file using this code:

“ftp -s:upload.txt
pause”

The user is using an excel file, so I made a link to the batch file and the user wants to append several files to the same path so he would run several times the batch file but it is overriding, only when we do it manually and we type several appends that it works, is there a way to do it automatically so that the user can append several times on the same connection opened, or open the connection one time and append as long as required?