Calling a file with FTP caller whose name is partly random

Hello,

I am using FTP Caller to call a file with a name like this:

   A-IPE_810704320_NATH_PM_IPEZMD_V31_@Value(_timestamp)_27.csv

My problem is that the last two digits (here 27) are random...

So I tried to replace the last two characters, like this:

   A-IPE_810704320_NATH_PM_IPEZMD_V31_@Value(_timestamp)_??.csv

   A-IPE_810704320_NATH_PM_IPEZMD_V31_@Value(_timestamp)_*

But it doesn't work and it returns an error.

I know I can list all the FTP files in an attribute and then search for the right file with "String Seracher" but I thought it might be easier!

PS: The @Value(_timestamp) part works correctly and returns the date in the format used in the file naming.

Thanks in advance