AMPL: Invalid subscripts -

I intend to do an optimization, but I get an error which is causing the reason I do not find the compiler Complains about SERTIME, is initial and is not invalid. Specifically the compiler halts in TimeConstant complaining that there is no value for servicetime ['Origin'].

The problem is in the question:

  in the time constance}: Amount in the United Nations (i) in the UNI, the termination of the equation [i] * x [i, J, k] & lt; = 1440;   
 Where:  
  original set; Set DESTINATIONS; Set up UNI; Param timed (UNI) integer & gt; 0; Var x {UNI, UNI, H} Binary; Ultimate beginning {UNI}; Ultimate Endimate {UNI};   
 is a .at file:  
  set Origins: = 1 2 3 4 5 6 7; Set DESTINATIONS: = 8 9 10 11 12 13 14; Uni Set = Origin Union Destination; Ultimate: Initial termination period: = 1 0 1440 360 2 1440 360 3 1440 360 4 1440 360 5 1440 360 6 1440 120 7 1440 120 8 1440 360 9 1440 360 10 1440 360 11 1440 360 12 1440 360 13 0 1440 120 14 0 1440 120;   
 I do not think how it does not work. I feel this right. Hope someone can put some light in this! Regards,   
 
 
 AMPL does not allow data format expression, so  ORIGINS  , The expression of the  union  and  DESTINATIONS  are interpreted in the word statement as a string instead of  ORIGINS union DESTINATIONS   
  UNI Set = Origin Union Destination;   
 You can fix this by launching the set in the model file in the declaration:  
  set Origins; Set DESTINATIONS; Uni Set = Origin Union Destination; Param timed (UNI) integer & gt; 0; ...