private void SetBooleanToFalse(Grasshopper.Kernel.Special.GH_BooleanToggle boolTrigger)
{
if (boolTrigger == null)return;
grp.Colour = System.Drawing.Color.IndianRed;
boolTrigger.Value = false; //set trigger value to false
boolTrigger.ExpireSolution(true);
}