corrected code to be, so only OT is enabled and shown when Set time matched or exceeded , but roll over is still the problem

Code:
  if  Days => Set_Day and Hours => Set_Hour and Minutes => Set_Min and Seconds => Set_OT_Sec then OT_Enable = 1
 

   if OT_Enable = 1 THEN    
        OT_Days    = Days  - Set_Day   
        OT_Hours    = Hours - Set_Hour
        OT_Minutes = Minutes - Set_Min 
        OT_Seconds = Seconds - Set_Sec
       
     endif