Not working

Hello, I’m trying to use this pluigin but it looks like it’s not working or I’m doing something wrong.

I had to change a plugin for posts grid and I have to replace the shortcodes of the old plugin, placed in hundreds of posts, with those of the new one. So I have to replace

[frontpage_news widget=”9097″ name=”ARTISTS”]

with

[pt_view id=”c3b79bfjsa”]

I’ve put the first value in “Search for” and the second in “Replace with”. I selected wp_554_posts as table, run the plugin and nothing happened.

I received this message:
“DRY RUN: 1 tables were searched, 0 cells were found that need to be updated, and 0 changes were made.

Click here for more details, or use the form below to run the search/replace.”

I’d appreciate very much any help, thanks!