Hi
I use AXL add line,but I can`t find where set the Line`s Calling Search Space.
I can`t find about the CSS attribute in the XLine Class
My CUCM is 8.5, use .net2008 .

The Code like this:
XFkType xfktype = new XFkType();
XPhoneLine line = new XPhoneLine();
line.audibleMwi = xPhoneLineField.audibleMwi;
line.busyTrigger = xPhoneLineField.busyTrigger;

line.callInfoDisplay = xPhoneLineField.callInfo;

line.consecutiveRingSetting = xPhoneLineField.consecutiveRingSetting;
line.dirn = new XDirn();
line.dirn.pattern = xPhoneLineField.dirnpattern;
line.dirn.uuid = xPhoneLineField.dirnuuid;
xfktype = new XFkType();
xfktype.Value = xPhoneLineField.routePartitionName;

line.dirn.routePartitionName = xfktype;
xfktype.uuid = Guid.NewGuid().ToString().ToUpper();
line.display = xPhoneLineField.displayLine;
line.index = xPhoneLineField.lineIndex;
line.maxNumCalls = xPhoneLineField.maxNumCalls;

line.missedCallLogging = xPhoneLineField.missedCallLogging;

line.mwlPolicy = xPhoneLineField.mwlPolicy;

line.partitionUsage = xPhoneLineField.partitionUsage;

line.recordingFlag = xPhoneLineField.recordingFlag;
line.ringSettingActivePickupAlert = xPhoneLineField.ringSettingActivePickupAlert;
line.ringSettingIdlePickupAlert = xPhoneLineField.ringSettingIdlePickupAlert;

line.ringSetting = xPhoneLineField.ringSetting;
 

Thanks David Staudt,I got it