TArray - error C2663

Development Programming & Scripting C++
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1

Hi,

I got a following error

error C2663: ‘TArray::Add’: 2 overloads have no legal conversion for ‘this’ pointer

.h

FString StringFromBinaryArray(const TArray& BinaryArray);

where my .cpp is

FString ATCPActor::StringFromBinaryArray(const TArray& BinaryArray)
{
          BinaryArray.Add(0);
          return FString(ANSI_TO_TCHAR(reinterpret_cast<const char*>(BinaryArray.GetData())));
 }

Have You got any ideas how to solve?