If value=1,
    run loop1test.
        else if value=0,
            run loop0test.
[download]

This is obviously not Perl code, but pseudo-code, so I will not offer to correct the syntax or anything, but I would suggest that you learn how to indent code correctly, so that indentation may be useful:

If value=1,
    run loop1test.
else if value=0,
    run loop0test.
[download]

This makes clearer that you run loop1test if the value is 1 and that, else, if the value is 0, you run loop0test.