How change the API Dialog Caption using VB.net

Hi I am using licensed version of Leadtools 15. Iam calling some API dialog in my application.How could I change the Dialog Caption  .?

I want to change the caption for L_DlgRemapHue() , I called  L_DlgSetString (1,"My Dialog")  so that the dialog caption is changed into "My Dialog" instead of default caption name but could nt get the right solution.

Please guide me to solve this issue.

You must not pass the value 1 in the first parameter, but instead use the value of DLG_REMAPHUE_IDSTR_CAPTION, which is 533.

I have used the following code to call the API dialog.....
And used            "      Dim ret As Integer = L_DlgSetString(533, "MyDilaog")"
to change the dlg caption into "MyDilaog"  But its not working ,

****************************************************************
               Dim hobj As New REMAPHUEDLGPARAMS()
                hobj.pBitmap = ptr
                hobj.uStructSize = Marshal.SizeOf(hobj)
                Dim hobj_ptr As IntPtr = Marshal.AllocHGlobal(Marshal.SizeOf(hobj))
                Marshal.StructureToPtr(hobj, hobj_ptr, False)
                Dim nRet As Integer = L_DlgInit(1)                             
                Dim ret As Integer = L_DlgSetString(533, "CyPacs")
                Dim nnRet As Integer = L_DlgRemapHue(hwnd_intptr, hobj_ptr)
**************************************************************************          
Please correct me if I went wrong somwhere in my code

Guna,
I want to try to reproduce the problem here, please try to isolate this issue in a very small test project (not your full application)  and send it to me in a ZIP or RAR file.

How do I find the DlgCaption ID for all API i.e as you mentioned 533 for Remaphue .I want the index for all the API dilaog ...please help me out

You can write a simple C++ program that prints all the values. For example, the following code shows the value I gave you last time:

char szMessage[1024];
wsprintf(szMessage, "The value of DLG_REMAPHUE_IDSTR_CAPTION is %d", DLG_REMAPHUE_IDSTR_CAPTION);
MessageBox(0, szMessage, "test program", MB_OK);

The output of these lines is a message box:
---------------------------
test program
---------------------------
The value of DLG_REMAPHUE_IDSTR_CAPTION is 533
---------------------------
OK   
---------------------------

thanks for your suggestion ..we have sloved that issue