You can set more than one variable at once with these commands by including
additional variable and value pairs, separated by spaces, as in the following
examples:
.set env MyGroup "X=5" "X2=45"
.bset env "Y=7" "CompilerVersion=4.511"
Note: Too many environment variables in a single project can cause Build Forge
to hang. To avoid this problem, limit the number of environment variables
to fewer than 8000. You can also use .source to set large numbers of environment
variables without impacting performance. See Running Scripts Before a Command With .source.