mdlIntersect_allBetweenElms problem

Hi, 

I'm programing in C# (visualStudio) and microstation V8i and I trying to use a mdlIntersect_allBetweenElms function and when I execute my program, I can get a vertex that intersect between two elements, but only first intersection, not a list of intersections into same two elements

This is my code

[DllImport("stdmdlbltin.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int mdlIntersect_allBetweenElms(ref BCOM.Point3d isPnt1, ref BCOM.Point3d isPnt2, int isPntSize, int edP1, int edP2, BCOM.Matrix3d rotMatrixP, double tolerance);


public static Intersect_allBetweenElmsResult Intersect_allBetweenElms(BCOM.Element elem, BCOM.Element elemIntersect)
{
	BCOM.Point3d pnts1 = new BCOM.Point3d();
	BCOM.Point3d pnts2 = new BCOM.Point3d();

	var nIntersections = mdl.mdlIntersect_allBetweenElms(ref pnts1, ref pnts2, 5, elem.MdlElementDescrP(false), elemIntersect.MdlElementDescrP(false), app.Matrix3dIdentity(), 0.001);
	if (nIntersections > 0)
	{
		....
	}

	....
	
	return nIntersections;
}

so...

I try to use an array Point3d[] at first and second parameters of this function, but an error is generated and does not give me any information about why, simply generate an error

I try to follow the example indicated at this post but doesnt work,

That is my example code

[DllImport("stdmdlbltin.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int mdlIntersect_allBetweenElms(ref BCOM.Point3d[] isPnt1, ref BCOM.Point3d[] isPnt2, int isPntSize, int edP1, int edP2, BCOM.Matrix3d rotMatrixP, double tolerance);


public static int Intersect_allBetweenElms(BCOM.Element elem, BCOM.Element elemIntersect)
{
	BCOM.Point3d[] pnts1 = new BCOM.Point3d[5];
	BCOM.Point3d[] pnts2 = new BCOM.Point3d[5];

	// IF THIS FUNCTION FIND INTERSECTIONS BETWEEN THIS ELEMENTS, ONLY CRASH MY EXECUTION
	var nIntersections = mdl.mdlIntersect_allBetweenElms(ref pnts1, ref pnts2, 5, elem.MdlElementDescrP(false), elemIntersect.MdlElementDescrP(false), app.Matrix3dIdentity(), 0.001);
	
	if (nIntersections > 0)
	{
		.....
	}

	.....
	
	return nIntersections;
}

I dont know why this error, my visualStudio not show more information about this error

Thsnks....

Kala