Once the production for a tool has been started for a Model, machine and Operation, the parameter operating values can be modified through the Parameter Change screen. All the tools that are currently being used for production are listed in this screen. You are not allowed to Add or Delete any record in this screen. For changing the parameter value, select the Model, Machine No., Operation and Tool code, and click the Modify button. The grid on the screen displays the Parameter, along with Unit Of Measurement, Range, Old Value and New Value. Enter the quantity produced by the tool till the time the parameter was changed, in the Shift Production Qty textbox. You can specify new parameter value for one or all the parameters for the tool. The Old Value column displays the current parameter value; the new value for the parameter has to be entered in the New Value column. If the New Value entered is not within the Range specified for the parameter, then message shall be displayed ‘New value is not within the range. Do you want to accept?’. You can save the New Value by clicking on the Save button. The Old Value for the parameter shall be updated with the New Value that was entered. If the New Value entered that within the Range of the parameter, then on saving the Old Value shall be updated without displaying any message.