hi, i'm new in shell scripting and i'm working on bash on solaris 5.9

after try many stuff with unexpected results, i wonder:
it is not posible in bash, to use a variable that was created inside a loop, out of it?

i mean, for instance:
cat mytext | \
while read text
do
viko[$i]=$text
i=$i+1
done

echo ${viko[1]}
echo $i

those variables, seem to be empty


isn't posible to use any of those (array elements, and $i) outside the loop, before the done statement?