Error created with error code editor variable text

[MCF_Patrick]

I started to use custom error codes. I created a error.txt file to organize them. I found out that I can create variable strings inside error description when I use %s (Defining a Custom Error Code from the Error Ring - LabVIEW 2018 Help - National Instruments).
This works fine when I use the error ring and create a Custom error code (see picture).

If I want to make my user definded error codes from my -error.txt file also variable, Labview is not displaying a additional input as in the created custom error code.

Does anyone know if this problem can be fixed anyway.

Thank you very much for your replys.