cron(tab) with date in filename

I wan't to get a file every hour. Last week there was a crash and now i wan't to backup the most important file.

so far i have:

#!/bin/sh
#
date=$(date+"%F")
filename = "/mnt/backup/$date.txt"
wget http://www.__-=-__.nl/alles/backup.txt -O $filename 

As you may understand this isn't working. Could you give me a hand?

I should not use date as a variable name... anyway remove the spaces around the "=" and place braces around the variable like this:

filename="/mnt/backup/${date}.txt"

On this line there should be a space after the date command:

date=$(date +"%F")