Solution 12217: Locked Variables Are Not Displayed in Open Dialog Box Choices on the TI-89 Family, TI-92 Family, and Voyage™ 200 Graphing Calculator.
Why are locked variables not displayed in open dialog box choices on the TI-89 family, TI-92 family, and Voyage 200 graphing calculators?
The purpose of locked variables on the TI-89 family, TI-92 family and Voyage 200 is to keep the variable from being edited. All of the editors (Program, Geometry, Data/Matrix, Text) change the variable directly in memory (the editors do not work on a copy of the variable, but the variable itself). To edit locked variables, unlock the variable from either the VAR-LINK menu or use the "Unlock" command.
Below is an example of unlocking a variable from the VAR-LINK menu:
Below is an example of unlocking a variable using the "Unlock" command:
Please see the TI-89 family, TI-92 family and Voyage 200 guidebooks for additional information.