Not sure why the frost doesn't animate. It should scale based on the fuel level. I can remove all fuel and it goes away and add fuel but no animation until full?
FUELMASS=GetPropellantMass(hProp1);
fuel_percent1 = int(100 * (GetFuelMass()) / (FUELMASS));
SetAnimation(anim_FROST, fuel_percent1);
This is in
void ss_upper::clbkPreStep(double SimT, double SimDT, double MJD)
{