Read Profile Generic Buffer in C

I am able to read but I am unable to print column headers ?
How can I print column headers after reading profile generic columns.
gxArray obj = pg->captureObjects;

Hello,

I have read attribute index 3 it returns result in Hex I want the result in readable format.
Say I have four columns so I want to get OBIS code or column headers for 4 columns

Like this
ret = com_read(connection, object, 3);
gxReplyData reply;
reply_init(&reply);
ret = cl_updateValue(&connection->settings, object, 3, &reply.dataValue);

But it returns access violation error

Ok If I hit breakpoint I cant see my column headers.
Can You please let me know how can I print column headers after capturing / reading index 3

In C obj_CaptureObjectsToString is undefined

Thanks It works
char* data = NULL;
ret = obj_toString(object, &data);
if (data != NULL)
{
printf("%s", data);
free(data);
data = NULL;
}