I made one 
enjoy
If you are a Navigraph user and have been wanting Charts in the CJ4 – well here you go. I implemented a WT21 Plugin for Navigraph Charts that works in the CJ4. Note it does work in the C90 but since the Chart Button is not enabled in that Virtual Cockpit you will need to use external software that can send B Events or H Events (ie SPAD.neXt or other binding software).