Deleting tag from blog post using XMLRPC in JAVA

Hi,
I created a new blog post and added a Tag with it. Now I want to remove this tag from the post. So while editing the post I didn’t use struct terms_names attribute in the struct content. The problem is that the blog post is still showing the old tag.

I tried with passing an empty array to struct terms_names attribute in the struct content. still output is same..

Any help???