Redirect for old path with special character not working

Hello !

I am trying to set up 301 redirects on a client’s webflow site for some URLs with special characters, it redirects to the home page.

The old path is something like /?p=1345 to redirect to a specific page for example /blog . To do that following the webflow university directives I add the path like follows : /%?p%=1345 but when testing I am redirected to the home page.

Do you have any idea of what I doing wrong ?

Unfortunately, as it is for a client, I cannot give a share link.

Thank you for reading me !
I hope we can find a solution !