go to the Targets and assign that surface you want the link to daylight to...
in your case you can probably use
Click Set All Targets. (although it is a Best Practice to set them by region as your corridors become more complex)
In the Target Mapping dialog box, in the Object Name column, click <Click Here To Set All>.
if that is the question....
OR
Go to the Corriddor Dialog Box, Find the SURFACES Tab, Create a Surface, and insert the Top Links with the Plus Sign, assign the FG style to it....and have a nice day