Derive the Gantt chart in days

I want to export the PDF version of the Gantt chart, but the date will be based on the situation of the project to zoom, I think no matter how much the items are displayed in days.
The above content from Google translation, please give pointers.

@tianlanld Sorry for the trouble! OmniPlan should respect your project’s current zoom level when you export to PDF. If this doesn’t seem to be the case in your project, or if I’ve misunderstood the issue you’re reporting, could you let our Support team know? They’d be happy to help out. Our Support team can be reached at