Let's say I have several txt files with different names

and I wanna rename them to the following:

FI_200070300080000_{DATEFORMAT(ddMMyyHHmmss)}.txt

The problem is, they're all being renamed the same, if I check Overwrite, i get only one file and the others are gone, and if I uncheck overwrite in renaming, only one file gets renamed and my cmd batch crashes.

I wanna add some kind of index to the names, how? I

Hi

Difficult to solve since you want to add an index.

I think you're only option is to list all files and then loop thru them and rename them one by one,
using the {LOOP(Iterations)} variable, ex FI_200070300080000_{DATEFORMAT(ddMMyyHHmmss)}_{LOOP(Iterations)}.txt

Or if you don't want to use {LOOP(Iterations)}, create a job variable that you increment during each loop that you use instead.
Just remember to reset it before you're next run

I solved it differently by appending the original file's name, which is indexed and unique, to the new name FI_200070300080000_{DATEFORMAT(ddMMyyHHmmss)}.

but thank you your method will be useful for diff situations.

Did you try adding fff to the date format to get milliseconds? I suspect the renaming happens so fast that seconds is not granular enough.

FI_200070300080000_{DATEFORMAT(ddMMyyHHmmssfff)}.txt