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How do you make an effetc NOT show at daytime?

I'm making a floodlight and have successfully added a dynamic spotlight as well as a, an orb-like glow effect. However, although spotlight is inactive during daytime, I cna't seme to figure out how the glow effect cna be swicthed off during daytime. It seems like the easiest, most straightforward thing, yet i don't see anything pertaining to day and night. I'm working off other effects, some default, others third party, and I *think* I'm doing it right - but apparently not. Here's the code for the effect:

[Library Effect]
Display Name=fnlu_flood_y


Lifetime=0.50, 0.50
Delay=0.00, 0.00
Rate=1.00, 1.00
X Emitter Velocity=0.00, 0.00
Y Emitter Velocity=0.00, 0.00
Z Emitter Velocity=0.00, 0.00
Drag=0.00, 0.00
X Particle Velocity=0.00, 0.00
Y Particle Velocity=0.00, 0.00
Z Particle Velocity=0.00, 0.00
X Rotation=0.00, 0.00
Y Rotation=0.00, 0.00
Z Rotation=0.00, 0.00
X Offset=0.00, 0.00
Y Offset=0.00, 0.00
Z Offset=0.00, 0.00
Pitch=0.00, 0.00
Bank=0.00, 0.00
Heading=0.00, 0.00

Lifetime=0.00, 0.00
X Scale=2.50, 2.50
Y Scale=2.50, 2.50
Z Scale=0.00, 0.00
X Scale Rate=0.00, 0.00
Y Scale Rate=0.00, 0.00
Z Scale Rate=0.00, 0.00
Drag=0.00, 0.00
Color Rate=0.00, 0.00
X Offset=0.00, 0.00
Y Offset=0.00, 0.00
Z Offset=0.00, 0.00
Fade In=0.00, 0.00
Fade Out=0.00, 0.00
Rotation=0.00, 0.00
Face=1, 0, 1

Blend Mode=2
Color Start=255, 236, 0, 120
Color End=255, 236, 0, 0
Jitter Distance=0.00
Jitter Time=0.00
uv1=0.00, 0.00
uv2=1.00, 1.00
X Scale Goal=0.00
Y Scale Goal=0.00
Z Scale Goal=0.00
Extrude Length=0.00
Extrude Pitch Max=0.00
Extrude Heading Max=0.00

Any ideas?
With an xml for placement of the effect where you add:
effectParams= The parameters of the effect. For example, the following effect will appear at midnight on January 1st every year and exist for 20 minutes:
For instance:
<Effect effectName="fx_ForestFire" effectParams="MOY=01,01;DOM=01,01;HOD=00,00;MOH=00,20;"/>

Then compile as a bgl, of course.

Last edited:
Aaah... Makes sense that I should be looking at the attach point... I assume that's what you mean by "placement xml", correct?

Currently I have a controller activating both a dynamic spotlight and the halo effect. So, I should separate the halo effect from the controller, make a NEW attach point with the timing parameters, and attach the halo effect to that?
read the SDK Special Effects for your FS version (FS9, FSX or what ever...)
the controller effect shoud have the effect params.


Agh! I was looking over the relevant SDK files so closely that I must have gotten blind. That was very easy, thank you for your help Guenther! Apologies fort asking what amounted to a rather inane question :/