In “write” mode, click on the “set variable” action. Insert your resource into it, for example, {{links_data|notreuse}}, and you will receive your links in the variable.
I don't know if i'm doing something wrong but if i put inside the "Read file" command an resource file path "lines from file" the function doesn't work
Doing so means that there is path to another file inside your original file.
Just use resource anywhere in your code.