SSRS: Can not display Image using Lookup from different data set

Hi,

I have two data sets in a report

Dataset 1

1. Datasource : SSAS

2. Colums : 1. Product_ID 2. Volume

Dataset 2

1.  Datasource : SSMS

2. Colums : 1. Product_ID 2. Image

Now, I have created a tablix with Dataset 1 as datasource and displaying

1. Image 2. Product_ID 3. Volume

To display image in first column I have used following lookup function :

"Dataset 2")

But image box is not able to display the image.

Please help.

Thanks in advance.