for a uni project i need to make a piechart it's why i decided to use JavaFX, i follow this tutorial
I download JavaFX 16, i create my user library, JavaFX16 that i add into Classpath 
I also add the VM argument " --module-path "C:\Users\andre\Downloads\openjfx-16_windows-x64_bin-sdk\javafx-sdk-16\lib" --add-modules javafx.controls,javafx.fxml "
but i still have this error "Error occurred during initialization of boot layer
java.lang.module.FindException: Module javafx.controls not found"

I find this other stackoverlow page but it doesn't help. If someone know how to fix this, i would be glad to hear him. (I'm sorry if i made english mistake or that i forgot to add something)
Have a nice day.