Nitrous; How?

Hello all,
I have been trying to do a Nitrous hookup in my plane, and cannot get it to work.

I have this in my engine config;
[NITROUS_SYSTEM_0]
reservoir_size=100
flow_rate=1.0
mp_boost=4.5 ; was 1.5

I have a switch and a code for turning on the Nitrous;

					(L:TURBO_BOOST) ! (>L:TURBO_BOOST)
					(K:NITROUS_TANK_VALVE_TOGGLE:1, number) ! (>K:NITROUS_TANK_VALVE_TOGGLE:1, number) 

What might I be doing wrong?

I have raised the power amount to 4.5 from 1.5 thinking I would then see a visible change in power, but that did nothing. Nothing is working.

Any thoughts?
I have the regular older version Fuel system.

Many thanks for looking it over and if you have any ideas…

Bill
LHC

Edit: The above coding for the Nitrous strings was bad. I have corrected that, but not sure if ‘number’ commands will work with this code layout.

I was testing this and in the SimVars watcher App, it showed zero in the Nitrous tank.
I noted on the DC3 which has Nitrous (instead of super charger) that it has no listing for a Nitrous section in its Engines or Flight Model configs.
Where do you put the Nitrous tank entry at?

As it is above, from the SDK:

[NITROUS_SYSTEM.0]
reservoir_size=100
flow_rate=1.0
mp_boost=4.5 ; was 1.5