rdlc report how to collapse a table rather than just hide?

I have rdlc report in which i am showing or hiding a rectangle(in which it consists of consists of no.of tables and text boxes etc.). If the rectangle is hide, then also it is taking certain amount of space which is allocated to that so in my report extra blank page is coming after exporting to Word. I have tried with Row Visibility property to the table inside rectangle but it is also not working. Could you please help on this. Thanks in advance.