Problem with Formatted Search-Urgent

Hi All, I have a problem as follows:

I am trying to set up a formatted search in the Batches Setup window of GRPO document. I want to pickup the "Total Created" figure from Rows From Document grid (i.e. the upper grid) in the form. I want to add 100 to it and then to display the result in the "Batch Attribute1" Field in the lower grid i.e. Created Batches Grid.

Please someone give me the tested query for the purpose..

Thanks In Advance

Amol Mangalkar