Editing JS directly for quick copy/paste of similar operations

Hi there,

so I had some issues with the JS editor from Acrobat and solved this problem thanks to help on this forum, using a different external editor.

Now, I have many fields on my PDF which all have to be computed using the same operation.

Let's say, basically, I have 200 fields, each of them being equal to one of 200 other fields multiplied by 5.

I could go through all those 200 fields and each time click on all those buttons to insert the correct operation ... or, I could directly edit the JS for this PDF more quickly via some copy/paste or with a script of my own.

I've tried that by clicking on the "More > All Javascripts" option, but it never saves my edits, even though I am careful to change everything that needs to.

Does anyone know how to do that efficiently?

Is there a way I can find the JS file that is use by Acrobat to do the calculations?

Thanks!
Nicolas