ios - How to choose all but one UILabel included in self.view? -

when refresh user data webapp, want refresh labels present user data. unfortunately there 1 label not need updated. it's property uilabel *noappointments.

here's attempt, results in self.noappointments having label of error:

for(uilabel *subview in self.view.subviews){     if([subview iskindofclass:[uilabel class]] && (subview != self.noappointments)){         subview.backgroundcolor = [uicolor clearcolor];         subview.text = [[userobject userunique] getstringlabel:subview.tag];         [subview setfont:[uifont fontwithname:system_font_type size:system_font_size*1]];         [subview settextcolor:[uicolor lbluecolor]];     } } 

i have tried version of testing inequality of views:

        if([subview iskindofclass:[uilabel class]] && !(subview == self.noappointments)) 

this gives error. error comes executing function

subview.text = [[userobject userunique] getstringlabel:subview.tag];

on self.noappointments.

i tried condition

    if([subview iskindofclass:[uilabel class]] && !([subview isequal:self.noappointments])) 

this failed exclude self.noappointments. give dummy tag , function return right value unwanted uilabel, don't idea of modifying function in class solve problem. how can reject class/properly reject equality?