I am trying to do a script. And I do not get how to set the stars magnitude on the script. Could you help me? Thank you.

This is my script. And I am trying to set the magnitude of the stars from 2.0 to 0.0 at the second half.

Which is the instruction?

Thank you, AlexFarah

///////////////////////////////////////////////////
//BLOQUE 1 PARA GENERAR MAPA CELESTE111
//////////////////////////////////////////////////
core.wait(1);
LabelMgr.deleteAllLabels();
core.clear("natural");
LandscapeMgr.setFlagLandscape(false);
LandscapeMgr.setFlagAtmosphere(false);
LandscapeMgr.setFlagFog(false);
core.wait(1);
core.setDate("1975:05:25T12:00:00");
core.selectObjectByName("Sun", true);
StelMovementMgr.setFlagTracking(true);
core.wait(1);
StelMovementMgr.zoomTo(70, 2);
ConstellationMgr.setFlagIsolateSelected(true);
SolarSystem.setFontSize(21);
ConstellationMgr.setFontSize(21);
core.selectObjectByName("", false);
SolarSystem.setFlagPlanets(true);
SolarSystem.setFlagLabels(true);
//StarMgr.setFlagLabels(true);
ConstellationMgr.setFlagLines(true);
ConstellationMgr.setFlagArt(true);
ConstellationMgr.setFlagLabels(true);
ConstellationMgr.setArtIntensity(0.8);
core.wait(1);
LabelMgr.labelScreen("AlexFarah",300,80,true,25,"#FFFFFF");
LabelMgr.labelScreen("Todo cambia.",50,850,true,25,"#FFFFFF");
LabelMgr.labelScreen("Mi cumpleaños en el Cielo; Yo ayudé a revivir el Primer Planetario de México.",300,50,true,25,"#FFFFFF");
ScreenImageMgr.createScreenImage("logo", "../textures/SAMazul2.png", 50, 50, 1.0, true, 1.0, 1.0);
core.wait(1);
SAM = new Array(length=30);
SAM[1] = 154;
filename = "SAM " + SAM[1]
core.wait(1);
core.screenshot (filename,false,"");
ScreenImageMgr.deleteAllImages();

///////////////////////////////////////////////////
//BLOQUE 2 PARA GENERAR MAPA CELESTE111
//////////////////////////////////////////////////
LabelMgr.deleteAllLabels();
var constellations = new Array("Gemini", "Cancer", "Leo", "Virgo", "Libra", "Scorpius", "Ophiuchus", "Sagittarius", "Capricornus", "Aquarius", "Pisces", "Aries", "Taurus");
SolarSystem.setFlagPlanets(false);
SolarSystem.setFlagLabels(false);
StarMgr.setFlagLabels(false);
ConstellationMgr.setFlagLines(false);
ConstellationMgr.setFlagLabels(false);
ConstellationMgr.setFlagIsolateSelected(true);
ConstellationMgr.setFlagArt(true);
ConstellationMgr.setFlagLabels(false);
ConstellationMgr.setArtIntensity(1);
for(i=0; i<constellations.length; i++)
{
core.selectObjectByName(constellations[i], false);
core.wait(0.6);
}
SAM = new Array(length=30);
SAM[1] = 154;
filename = "SAM " + SAM[1]
core.wait(2);
core.screenshot (filename,false,"");
ScreenImageMgr.deleteAllImages();
core.wait(1);