Spliting a table in to two table based on the groups in SSRS

Hi,

I am trying to a split a rows accross two tables based on a group.

So far I have added a list and added a row group and grouped it using lineof business

Inside my list i have two identical tables so i can display the data

for the first table i have set the row visibility as follows: where LineOfbusiness1 is the  groupname of my list group

=RowNumber(Nothing) >= (IIf(CountRows("LineOfBusiness1")\2 = 1, CountRows("LineOfBusiness1")/2, (CountRows("LineOfBusiness1")/2)+1))

and for the second table in the i have set the row visibility as follows

=RowNumber(Nothing)< (IIf(CountRows("LineOfBusiness1")\2 = 1,CountRows("LineOfBusiness1")/2, (CountRows("LineOfBusiness1")/2)+1))

this set up works fine for the first group but it doesnt display the data the way i want for the subsequent groups.

so how do i have the table start over after each group... plus in my group i have specified to do a page break after everygroup...

Any help will be appreciated.

Thanks

Karen