Hi, can somebody tell me how to get the inventory of a new building get working?

I use the Building from Knackery and want that it have the same Inventory then warehouse.

I can build the building but if i click on open inventory nothing happens.

Somebody know where i have forgotten something?

not possible.
warehouse buildings are hardcoded, they can't be added through mods as far as I know.
Only movable objects with inventory can be added.

Does changing MaxContSize in cm_objects.xml for Knackery have an effect?