Deleting a certain word from a .txt through an ftp

[trevor206]

Ok so I need some help I have a .txt file on a ftp, Its a chat of sorts so I wanted to make it so once the program closes it deletes the text that is in textbox1(but not really the text in textbox1 but the text that matches textbox1 on the ftps .txt)

Sorry if I wasn't clear if you could not understand what I wrote just tell me and I will try to write it out in a more clear way.

If you can help thanks, if you can't thanks for reading.

[Jason]

You'd have to reupload the text file to the FTP each time.