objective c - Calling external variables from swift -

how can call extern variable nsbeginalertsheet swift.

in project, need use framework has extern variales defined , code same written in objective c. easy call same objective c project, not able call same swift.

thanks in advance.

if want use obj c in swift want create bridging header file , import .h file want use in swift project

click on link know how use obj c within swift how call objective-c code swift