Hello... I've got 32 variables for 16 objects (2 for each of them) and want to use such a pairs of variables [1;17], [2;18], [3;19], ..., [16;32] to make some tests and computations. I've written a script but still wondering if there better possibility to do this. Script: loop for i=1..16 loop for k=17..32 if k-i=16 adf 2 $i $k --c --test-down kpss 2 $i $k --trend coint2 1 $i $k vecm 1 1 $i $k endif endloop endloop What do you think? Best wishes... Mariusz Szczecin (Poland)