could any one help

i want to know how to deselect using b command
in modeling after selecting vertices more than i need to deselect with box. if i heat b with shfit or alt it doesn’t work:spin:

Press B to box select.
LMB = selects
MMB = deselects

For few vertices that got over selected with box select, b, I just Sift + LMS the vertices. Its quick.

Note my preference for Input is to Select with Left mouse button.

thank you very much