Retrieving metadata from MediaBin in Teamsite using ECM connector

merry

Hi,
I am using ECM connector to connect to MediaBin (4.6.1 Build 7) from Teamsite (6.7.1). I wish to import specific metadata from the mediabin with the image. Currently I am getting "Name" of the image in the "label" attribute in my DCT (using),

< dialog-param name="label" >
< dialog-output >< field-ref name="label"/ >< /dialog-output >
< /dialog-param >

which i wish to change it to "Title" metadata. Similarly I wish to import other metadata from the Mediabin to my DCT. How can i do that?
The tagslike "arealpath", "asset-id", "label" can be used successfully to retrive these values from Mediabin and save them into teamsite. But these values should be unique in the DCT.How can I handle the situation where I have two images in my DCT?
Please help me with the same.
Thanks in advance.