Question about the function of HC12FcnMul​tiRateMult​itaskingWi​thoutOS(cF​ile) void

 The function of HC12FcnMultiRateMultitaskingWithoutOS(cFile) void is in the hc12mainlib.tlc file.the code as  follows:
     %if NumSynchronousSampleTimes > 2
          for (i = 1; i < %<NumSynchronousSampleTimes>; i++) {
      if (eventFlags[i]) {
        if (OverrunFlags[i]++) {
          %<RTMSetErrStat("\"Overrun\"")>;
          return;
        }
        
        /* Set model inputs associated with subrates here */
        %<FcnCallMdlStep("i")>\
        
        /* Get model outputs associated with subrates here */
        OverrunFlags[i]--;
      }
         }  
 In the C code which generated by %<FcnCallMdlStep("i")>\
the character "i" can not become numeral,it is only character "i"
how to solve the problem?thank you.