Drazen29

I write program in LAD , if it has anything to do with it.

No.

The feature, that changes parameters in a message text  stored on a program on a mSD card comes later.

LOGO! 8.1? FS05 or FS06? I don't exactly.

But this has nothing to do with programming language ...

You don't have to store the program in your case on mSD card. Or copy after change of a parameter if is it possible.

I take a look a older manuals, the feature is possible at LOGO!8.FS5 or newer.