https://community.appian.com/discussions/f/user-interface/21118/how-to-save-data-on-interface-without-using-dot-notaionMy use case is i need to create editable grid for 100 columns from one table. While building interface type of data is fixed it could be Text Integer Drodpown Date I need to use foreach to loop component to store data but all columns are not mandatoryen-USTelligent Community 12https://community.appian.com/thread/82305?ContentTypeID=1Thu, 03 Jun 2021 06:59:00 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:8ffd84e9-4f5b-46cc-b7b8-35eb50f2d5fdStefan Helzle<p>This explains all ways to fetch values from fields.</p> <p><a href="https://docs.appian.com/suite/help/21.2/Expressions.html#variables">https://docs.appian.com/suite/help/21.2/Expressions.html#variables</a></p> <p>Be aware that the dot-notation and square-bracket notation return a reference to the value while index() returns a copy and you cannot store data into the copy of a value. To dynamically store data into a CDT you would use square brackets.</p> <p>You are aware that a grid with 100 columns will have very bad performance? Why no master-details pattern?</p><div style="clear:both;"></div>