Pack USB driver into DMG file

I made an app on Mac OS X with XOJO, but it need USB driver installed to make sure the app works. I have the USB driver Mac version, it’s an intaller style file. I want to combine it with my app, or I should say pack them together. When user open my DMG file, the USB driver installer will run first then copy my app to “Application” folder.

I already have DMG canvas, I don’t know if it can do the job or not? Can anyone give a recommandation? Thanks!

Do I have to write a script?