ASA 5505 script error - tunnel not working

I am trying to connect my ASA 5505 to Azure Site-To-Site VPN.

I downloaded the script and everything appears to run fine, except this line:

tunnel-group x.x.x.x type ipsec-l2l

I get the error:

myrouter(config)# tunnel-group x.x.x.x type ipsec-l2l
                                                             ^
ERROR: % Invalid input detected at '^' marker.
myrouter(config)#

(the marker is pointing at the word "type")

Any ideas on what my problem is?