Hi all,

Just a very simple question and command yet I can't figure out why it is not working.

I just downloaded a dataset on all company's in the North-American market. Now I simply want to get rid of the American companies to see whether all cross-listed companies have a foreign primary issue tag. Therefore, as a first command (after clear all, cd and sysuse) I run:
drop if fic==USA
And then it says:
USA not found

It does not work for any of the -fic- or -tic- commands, but if I for instance do the command:
drop if fyear==2002
Then it does drop the years 2002

How is this possible and how can I resolve this? Thanks in advance for your help.