- m_x1 = expr->Nth(1)->RealValue();
- m_y1 = expr->Nth(2)->RealValue();
- m_x2 = expr->Nth(3)->RealValue();
- m_y2 = expr->Nth(4)->RealValue();
- m_x3 = expr->Nth(5)->RealValue();
- m_y3 = expr->Nth(6)->RealValue();
+ m_x1 = expr->Item(1)->RealValue();
+ m_y1 = expr->Item(2)->RealValue();
+ m_x2 = expr->Item(3)->RealValue();
+ m_y2 = expr->Item(4)->RealValue();
+ m_x3 = expr->Item(5)->RealValue();
+ m_y3 = expr->Item(6)->RealValue();