I know there is a way to change variable name at once, but it is must be on one line program. is there any option to change variable name? just like when you rename variable in matlab.

Install Text Region Utilities plugin.
There is a Search and Replace feature in it.
You can change a variable name across all sheet.

Or you can edit file with a text editor (notepad).

Regards

Wrote

I know there is a way to change variable name at once, but it must be on one line program

... multiline program as well from F8 key.

Wrote

Install Text Region Utilities plugin.
There is a Search and Replace feature in it.
You can change a variable name across all sheet.

Or you can edit file with a text editor (notepad).

Regards

Could you plz show me how to do it?