How do I make carriers cheaper for one nation

[unmerged(189717)]

I'd like to know the event command for reducing the production time of carriers and light cruisers by 30% and the IC cost by 20%.
Can someone help me? I can't find the commands in the HoI2 Wiki.

 

[Mjarr]

command = { type = build_time which = light_cruiser when = now where = relative value = -x }

command = { type = build_time which = carrier when = now where = relative value = -x }

same but type = build_cost instead to reduce IC cost. Value is by x% and obviously positive will increase it while negative will decrease it.

And as for how to do such stunt, either make it doctrine based or add an event that activates and gives access to such tech\instant effect

 

[unmerged(189717)]

Thank you very much.