SNAT do not work

Hello, 

I'm using FortiOS 7.

I need a rule that do this: 

2 source server with ip1 and ip2

2 public ip, Pub1 and Pub2 

I need the two servers ip1 e ip2 go in internet with Pub2 (not the default) 

So I made a SNAT rule like the below, but do not work. What's wrong?  

config firewall policy set name "LAB2 SNAT" set uuid cda48efe-f6c6-51eb-2f52-56f13adb9039 set srcintf "internal" set dstintf "wan1" set srcaddr "Ip1-Ip2" set dstaddr "all" set action accept set schedule "always" set service "ALL" set logtraffic all set nat enable set ippool enable set poolname "PUB2" next end