how to pass .swf button next function to the go to next in a regular captivate file

How was the simulation created?

If you used Cp to create the simulation, exported the SWF, and imported to a new project you're seeing some recursion problems. As I understand it, Cp SWFs imported to a new project will overwrite data in the controlling project.

My suggestion would be to publish the simulation to a folder, copy to a webserver or LMS, and test to ensure expected playback.

Then, create the Cp project with a "web object learning interaction" that calls the URL of the simulation. OR

Use the LMS to manage the two projects as requirements for a single course.

If you provide some details on what you expect to accomplish or control, you'll likely receive additional comments and recommendations.