How to correct this incremental constrain in cplex

Question

How to correct this incremental constrains in the main because the below code gives me an error of (scripting run time error not of type 'lloNumVar ' because the Nchannel/ adj.beams may be an integer and fraction number.

 main
{
for(i in thisOplModel.beams)
{
  thisOplModel.ctEmpty[i].setCoef(thisOplModel.beam_nomusedchannel[i],1);
  thisOplModel.ctEmpty[i].setCoef(thisOplModel.Nchannels/thisOplModel.adj_beams[i],-1);
  thisOplModel.ctEmpty[i].setBounds(0,10000000)
  }  
  cplex.solve();
  thisOplModel.postProcess();          
subject to
{
 forall ( i in beams)
 ctEmpty:0<=0;
 //beam_nomusedchannel [i]  >= ceil (Nchannels/adjbeams[i]);
}

Answer 1

If adjbeams and Nchannels are not decision variables you should turn

thisOplModel.ctEmpty[i].setCoef(thisOplModel.Nchannels/thisOplModel.adj_beams[i],-1);
  thisOplModel.ctEmpty[i].setBounds(0,10000000)

into

//thisOplModel.ctEmpty[i].setCoef(thisOplModel.Nchannels/thisOplModel.adj_beams[i],-1);
  thisOplModel.ctEmpty[i].setBounds(thisOplModel.Nchannels/thisOplModel.adj_beams[i],10000000);

Answer 2

main
{
for(i in thisOplModel.beams)
{
  thisOplModel.ctEmpty[i].setCoef(thisOplModel.beam_nomusedchannel[i],1);
  thisOplModel.ctEmpty[i].setCoef(thisOplModel.Nchannels/thisOplModel.adj_beams[i],-1);
  thisOplModel.ctEmpty[i].setBounds(0,10000000)
  }  
  cplex.solve();
  thisOplModel.postProcess(); 

int Nchannels =20; // Nchannels is an integer number

         
subject to
{
 forall ( i in beams)
 ctEmpty:0<=0;
 //beam_nomusedchannel [i]  >= ceil (Nchannels/adjbeams[i]);
}

Execute
{
 //adjbeams[beams] is an after execute array; {11,15,7,6,5,4,3,1,12,...} 
}