方法没有采用2个参数的重载

public static void ShapeAndComplexShape()
{
Application app = Utilities.ComApp;
Point3d[] pntArray = new Point3d[6];
pntArray[0] = app.Point3dFromXY(0, -6);
pntArray[1] = app.Point3dFromXY(0, -2);
pntArray[2] = app.Point3dFromXY(2, -2);
pntArray[3] = app.Point3dFromXY(2, -4);
pntArray[4] = app.Point3dFromXY(4, -4);
pntArray[5] = app.Point3dFromXY(4, -6);
ShapeElement oShape = app.CreateShapeElement1(null,ref pntArray);

部分代码如上，编译提示CreateShapeElement1这个方法没有采用两个参数的重载，请问各位老师这是？谢谢