unable to ping from specific ip to outside

[Khurram]

i am having ASA firewall with 9.6 code. when i create and apply ACL as below it works fine 
ASA(config)#access-list abc permit icmp any any echo-reply
ASA(config)# access-group abc in interface Outside

 but when i wanna allow specific IP to ping to Outside creatin ACL as below, it does not work.

ASA(config)#access-list abc permit icmp host 1.1.1.1 192.1.20.0 255.255.255.0 echo-reply
ASA(config)# access-group abc in interface Outside

Help me

thanks

[Khurram]

Yes you are right @Rob Ingram it works fine now

[Khurram]

@Rob Ingram appreciate
yes this is the solution
Thanks