Is it possible to use Proxy by Patterns and PAC at the same time?

[user753]

I use Firefox and FoxyProxy 8.9
I have a pac proxy and another proxy for x.com
If I select my pac proxy - sites for this proxy works buy proxy for x.com doesn't work
If I select Proxy by Patterns - proxy for x.com works buy pac proxy doesn't work
What can I do?

[erosman]

Proxy Auto-Configuration (PAC) file is meant to handle all patterns within itself. If you can edit the PAC, then you can add the patterns yourself.

The way browsers handles proxying is that you can either choose a PAC or an individual proxy, as seen on:
Firefox menu -> Settings -> Network Settings

[user753]

I cannot edit pac file.
I think it would be useful if pac proxy can be included and excluded the same way as common proxy. So I could exclude it from x.com and use it with Proxy by Patterns