CANNOSCALE

I have received several drawings from an architect which were started in Autocad and which have CANNOSCALE set to something other than 1.0.  Bricscad apparently uses the CANNOSCALE value because dashed line types are affected, but Bricscad does not recognize CANNOSCALE when typed at the command line.  Is there a way to reset CANNOSCALE to 1.0 other than opening the file in Autocad?

Thanks in advance.