Grid template dgnlib

HI,

we have company standards and project settings.

Haw to add a project grid template to use in the grid manager.

I have copied the company standard grid template to the project "BB_Floormaster.dgnlib" and renamed and changed it a little (so floors, grid, and templates are in 1 project dgnlib
I've added the BB_Floormaster.dgnlib in the variable: BB_GRID_TEMPLATE_DGNLIB  < $(BB_FLOORMASTER_DGN) (in the workset cfg)
variable explorer shows both

but now non of the "grid templates" are available,
not the company standard, not the project

can BB_GRID_TEMPLATE_DGNLIB handle only one dgnlib?

if I change  " BB_GRID_TEMPLATE_DGNLIB  = $(BB_FLOORMASTER_DGN)   (overwrite)
the new template can be used

regards Rik