editing parts of a datagrid
I'm using a datagrid to show a list of records, with a checkbox in each row. Users toggle the checkbox and click a button to call a popup for editing the selected records. When users close the edit popup, I have modify data master actions in place to ensure edits carry over to the right records (for example, (filter(datamaster(input is checked & (record name is 'xyz'))) attribute A=input 1, attribute B= input 2, etc. ). For some reason, only the 1st row in the data master is updating no matter how many rows should be changed. Any thoughts on what I may be missing?