Hello, In order to accomplish this, you would need to read operand values from the data table using the row number as a pointer value. Once the value is read, it can be stored into "working" operands that you can place on your HMI screen. These working operands are just temporary. They can be changed via keypad entry and then it has written back to the data table in order to implement the changes. This process needs at least three steps to complete. The operand needs to be read and then stored into working operands, which than can be altered on the HMI panel. Once that working operand is changed, it then has to be written back to the data table and that would complete the process. Hope this information is useful.