Hello, I would like to use JavaScript to update PDF file. I saw the "function" "SearchAndRedactCmd" where can find any information about it. A this moment I just find find information about that it easy that ALL

As noted there is no search and replace in Acrobat Standard and not for Reader. Acrobat Professional has a redaction tool that find, remove, and add cover text which might work but it is not intended as a find and replace tool.