Deep copy of jagged arrays

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VisualC++

Hi,
I have created two jagged arrays ParamValue, LParamValue like below. Inserted values to ParamValue and copied to LParamValue array using Array::CopyTo, Array::ConstrainedCopy functions. For the first time ParamValue values are inserted into LParamValue correctly after that i modified ParamValue values which are effecting LParamValue array even before CopyTo function call.
But i want to copy values only after CopyTo function call. How to do this. Please help me....

My code:

array<array><double>^&gt; ^ParamValue, ^LParamValue;
ParamValue     = gcnew array<array><double>^&gt;(2);
      ParamValue[0]                = gcnew array<double>(2);
      ParamValue[1]                = gcnew array<double>(3);

      LParamValue                  = gcnew array<array><double>^>(2);
      LParamValue[0]               = gcnew array<double>(2);
      LParamValue[1]               = gcnew array<double>(3);

      ParamValue[0][0] = 3;
      ParamValue[1][0] = 5;
      ParamValue->CopyTo(LParamValue, 0);

      ParamValue[0][1] = 4;
      ParamValue[1][1] = 6;
      ParamValue[1][2] = 7;
      ParamValue->CopyTo(LParamValue, 0);