How to embed external html file in captivate project

Hi

I have an interactive animation (built in Unity and exported as html file, all files are in .zip folder)

I want it to be a part of my captivate project

I've tried to put it into captivate via "objects -> web", when I indicate a source to load, program is loading somethink but after that nothing is seen. my project doesn't appear in captivate, instead of this there is a text:

"Thank you for exiting the content. You may now navigate away from this content"

when I publish html anyway ther is nothing visible either

Maybe I should use completly different method? but it is important not to use FTP server