Shell Programming and Scripting

Is there anything wrong with this part of my codes? Am I not using the while loop correctly here? It keeps giving me an error with the 3rd line in bold.

I want the loop to run 10 times.. so I put in counter to decrease each time the loop runs. But the problem is the while statement itself. Isn't it put in the proper format??

Thanks in advance

counter=1
max=10
while ["$counter" != "$max"]
do
other codes....
other codes....
other codes....
counter="$counter"+1
sleep 10
done

this is the error that I get by the way: ./monitorUsers.sh: line 3: [1: command not found

I'm using Bash shell!

Spaces are required. Change this line while ["$counter" != "$max"] to while [ "$counter" != "$max" ]

Worked! thanks!!!