esp8266 connect when starting to which AP?

Using Arduino Programming Questions
16

LATER
I have now written a WiFiConnectSta() function to connect to the strongest of the networks matching the ssid.
I am doing this using Sloeber IDE 4.2 and I am having some problems with its checking of the source code...
Here is my function (not yet tested on the real hardware):

bool ConnectWiFiSta(char *ssid, char *passwd)
{
	int i, j, m;
	bool ret = false;
	bool found = false;
	uint8_t mac[6];
	int32_t level, channel;

	SerialDebug.print("Starting WiFi scan to check availability at T="); SerialDebug.println(millis());
	m = WiFi.scanNetworks(); //Return network count.
	SerialDebug.print("Processing scan result at T="); SerialDebug.println(millis());
	if (m > 0) //Networks found
	{
		for (i = 0; i < m; i++) //Check if ssid compares
		{	
			if (strcmp(ssid, WiFi.SSID(i).c_str()) == 0) //We have a match!
			{
				if (!found)  //First match so grab whetever comes along
				{
					for (j = 0; j<6; j++) mac[j] = WiFi.BSSID(i)[j];
					level = WiFi.RSSI(i);
					channel = WiFi.channel(i);
					found = true; //Only once here...
				}
				else if (WiFi.RSSI(i) > level) //A new match is stronger
				{
					for (j = 0; j<6; j++) mac[j] = WiFi.BSSID(i)[j];
					level = WiFi.RSSI(i);
					channel = WiFi.channel(i);
				}
			}
		}
                if (found)
                {
		    //So we have checked the networks and have a good strength match
		    //Now connect:
	            WiFi.begin(ssid, passwd, channel, mac, true);
	            ret = true;
                }
	}
	return (ret);
}

It compiles OK, but Sloeber shows an error marker on each line dealing with the array of scan result, such as:
level = WiFi.RSSI(i);
All in all there are 8 such error bombs in the left side margin.
Apparently Sloeber cannot figure out that there is an overload where there is an index inside the call like (i).
What can I do to fix this?