How to change the build directory of openstlinux Distribution package?

[Hsn]

Hi everyone, i am trying to run Distribution package from the STM on UBUNTU. It works fine with normal source command and make a build directory just by the folder of 'layers'. but how can i add my own build directory e.g. /mybuild/build_folder? I have tried the BUILD_DIR="dir" but it doesnt work and gives an error of ..

[source layers/openembedded-core/oe-init-build-env][from nothing]

Error: TEMPLATECONF value points to nonexistent directory '../../../layers/meta-st/meta-st-openstlinux/conf/template'

[Hsn]

I got it from the env setup that the folder name prefix needed to be ' build', and also need to change the layer paths in bblayers.