[shafa_hn]

I need to open result files automatically, calculate the "expression" and write down the result in a text file. But, when I use CCL commands like the following only the name of the expression ('TPR') is exported to the file, not the value of the expression. I need a command to export (to tmp.txt) the calculated value of TPR. I appreciate if any can help me.

!$outfile = "tmp.txt";
!open(OUT, ">$outfile");
!$tpr = TPR;
!print OUT $tpr;
!close(OUT);

PS: TPR is an expession defined before in CFT-post expression list which is total pressure ratio here.