Where to set takedamage false for warfare buildings

[pcc 14]

Trying to limit damage on them as work around for AI construction problems. 

I've tried adding _site allowdamage false for sites in Server\Construction, but it only applies to construction props. 

Also tried _structure addEventHandler ["HandleDamage", {((_this select 2)*0)}]; in Server_StructureDamaged.sqf, but it only worked for heavy factory.

[opusfmspol 273]

At the end of the Server\Construction scripts "hit" (call BIS_WF_StructureDamaged) and "killed" (call BIS_WF_StructureDestroyed) event handlers get added to the structure (not the props).  You could try adding the "handleDamage" event handler along with them; or maybe the allowDamage false at the beginning of Client\Init\Init_BaseStructure.sqf, which is the structure init script.