I am running a primal fear server on Rag and want to force people to kill the alpha bosses to get engram unlocker. I have tried making the cost the alpha dragon trophy, and the tek grenade, but it still costs 1 fiber.... this is what I added to end of GUS......

[EngramUnlocker]
DisableVanilla=false
DisableTek=false
DisableSorchedEarth=false
DisableAberration=false
DisableExtinction=false
DisableGenesis=false

OverrideNamedEngramEntries=(EngramClassName="EngramEntry_UnlockEngrams_C",EngramHidden=False,EngramPointsCost=0,EngramLevelRequirement=1)

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItem_UnlockEngrams_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItem_TekGrenade_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

Am I doing something wrong? Please help