It's not possible to help you with such a sparse description of the problem, like:
- which airplane you are using
- which airport you are using, if it's default or 3rd party
- if it's 3rd party, if you have Disabled it from GSX jetways replacement from the GSX Config panel, as you should always do.
- if it's 3rd party, if it's bought on the Marketplace.
- If it's bought on the Marketplace, if you have enabled support for the SU10 Navdata API from the GSX Config panel.