Cannot add picture using Shapes.AddPicture method

[ynevet]

Hi folks,

I'm trying to add a picture to my slide but without success unfortunately.

I'm using AddPicture method of Shapes and what ever i'm trying to do, I get the following error:
Description: "The specified file wasn't found."
Number: -2147024809

The following is my code:

function AddPicture(fileName,Left , Top , Width , Height)
{
try
{
LastError = '';
var objPicture = objSlide.Shapes.AddPicture("c:\pictures\yair.bmp", msoFalse, msoCTrue,Left,Top,Width,Height);
}
catch(e) 
{
LastError = e;
}
return LastError == '';
}

Anyone can help me please?

Thank you!

Yair