помогити с chrome.proxy.settings.set для Firefox

chrome.proxy.settings.set({value: config, scope: 'regular'}, 
            function () { 
 
                chrome.proxy.settings.get({incognito: false}, function (config) { 
 
 
                    if (config && config.hasOwnProperty('levelOfControl') 
                        && config.levelOfControl == "controlled_by_other_extensions") { 
                        self.clearProxySetting(); 
                        showDisabledNotification('Proxy settings are controlled by other extension', 
                            'Please disable all other extension which might cause a conflict with HOXX VPN.'); 
 
                    } else { 
                        chrome.storage.local.set({proxyIsOn: true}, function () { 
                            callbackSet(); 
                            if (isPublic) 
                                serverItem.startTime = Math.floor(Date.now() / 1); 
 
 
                            api.verifyProxy(config, serverLabel, host, port, scheme, selectedCountry, 
                                isPremium, isPublic, function (isSuccess) { 
                                    if (isPublic) { 
                                        serverItem.endTime = Math.floor(Date.now() / 1); 
                                        //profHandler.handleProxy(serverItem, isSuccess); 
                                    } 
                                    callback(); 
                                }, isCompact); 
                        }); 
                    } 
 
                }); 
 
 
            });