Copying Rows in iPart Table

[cadcamm99]

I am using Inventor 2014. I am creating an iPart with about 60 part numbers.  I have 3 variables A, B and L  dimensions.  The first 12 part numbers have the same L dimension.  The L dimension changes for every set of 12 part numbers but the other variables are duplicates for the first 12 part numbers.

I want to copy the first 12 rows and paste them like in excel and just change the part numbers and L dimension.  But I cannot seem to do that.  I tried to use copy and past and it copies the rows but inventor won't let me use them.

Any other way of doing this?

[cadcamm99]

Never mind I answered my own question. I just edited the table in Excel. Thanks.