Storing values in PeopleSoft fields coming from external HTML/Javascript

Dear All,

We are integrating with a 3rd party external application, which are using redirection methodology and not the REST API's. They are using JSP language.

Have implemented IScript to communicate and send the details between PS and the external 3rd party app.

Upon successful transaction, it is required to store their transaction ref no and other relevant details in PeopleSoft.

Please advise how this can be possible. Have tried using Iscript using %Response.Write function, but it is not working.

We are currently using CS 9.2, with PT 8.58.10 tools.

Kindly advise how this can be achieved.

Thank You.