AD844 CFOA

I want to purchase AD 844 current feed back operational amplifier, But i am facing a problem while doing simulation part on PSPICE simulator. It is written in data sheet that in case of CFOA current at pin 5 Iz=+ or - of Ix.

With the help of AD 844 i can use it as Iz=+Ix  but i want to know how it can be used for Iz= - Ix.

Because i am using both configuration in my project work.

Thanks.