'br' is not recognized as an internal or external command in windows 10

[saha-anik]

I am using openbr. My camke version is 3.17.2 and qt version is 5.9.9.
running this command ==>br -gui -algorithm "Show(false)" -enroll 0.webcam
I am getting below error.
'br' is not recognized as an internal or external command,
operable program or batch file.
I have also se my enviroment path like this ==> C:\openbr\build