Error when commit static nat two public ip into one private IP?

Hi all,

How i can translate the screen os below config into srx. It get error when i do commit.

On netscreen

set interface "ethernet1/1:1" mip 71.10.11.30 host 192.168.10.1 netmask 255.255.255.255 vr "trust-vr"   ---> https, tcp_400
set interface "ethernet1/1:1" mip 71.10.11.31 host 192.168.10.1 netmask 255.255.255.255 vr "trust-vr"  ----> http, tcp_200

SRX

[edit security nat static]
test@srx# commit
error: static nat rule STATIC-PUB-36 prefix overlaps with static nat rule STATIC-PUB-13 prefix
error: configuration check-out failed

Thanks and appreciate any feedback