Disable glow and emissive via script?

Hi all,

I am trying to run a timeofday event that disables/enables glow and emissive on a material.

Code so far:

function TimeOfDay::onAdd( %this )
{
   %this.addTimeOfDayEvent( 0, "Sunrise" );
   %this.addTimeOfDayEvent( 180, "Sunset" );
}

function TimeOfDay::onTimeEvent( %this, %identifier, %currentTime, %currentElevation )
{
   %lightsEnabled = ( ( %identifier $= "Sunrise" ) ? false : true );
   %glowEnabled = ( ( %identifier $= "Sunrise" ) ? 0 : 1 );
   %emissiveEnabled = ( ( %identifier $= "Sunrise" ) ? 0 : 1 );
   
   LampPost.setLightEnabled( %lightsEnabled ); // turn on/off point light
   LampPost01_material_0.glow[0] = %glowEnabled;  // turn on/off material_0 glow
   LampPost01_material_2.glow[0] = %glowEnabled;  // turn on/off material_2 glow
   LampPost01_material_2.emissive[0] = %emissiveEnabled;  // turn on/off material_2 emissive
   
}

The relevant materials get modified, I can look in the material editor and the glow/emissive state has changed. What I cannot get to work is for the material to actually update in the game. After looking at the material in the material editor it updates on the static - but not before I do that.

Any ideas?

Cheers,

Andy