The “Change Internal Variable ID” window allows Quagensia® Function authors to accomplish the rare task of changing the Internal Variable ID of an internal variable of a Quagensia Function.
You can view an internal variable’s Internal Variable ID in the “Internal Variable ID” field located in the “Advanced Fields” section of the internal variable, and if you are allowed to edit a Quagensia Function you can open the “Change Internal Variable ID” window from the “Change Internal Variable ID” button to the right of the “Internal Variable ID” field.
You should rarely need to change the Internal Variable ID of an internal variable of a Quagensia Function. In fact, if you never accidentally delete a Quagensia Function’s internal variable you should never need to use this feature.
You will need to use this feature if you accidentally delete a Quagensia Function’s internal variable after you’ve already used the internal variable in one of two ways:
- You used the internal variable inside of the Quagensia Function, which you probably will have done before accidentally deleting it.
- Quagensia N Edition Multi-Plot Indicators Only: You or another user used a Quagensia Function that represents a Quagensia N Edition multi-plot indicator in another Quagensia Strategy or Quagensia Function. The vast majority of Quagensia Functions do not expose their internal variables to other Quagensia Algos, so generally it is perfectly safe to delete an internal variable of most Quagensia Functions. However, Quagensia N Edition multi-plot indicators do expose their internal variables as the individual plots of the multi-plot indicator, such as the Upper Band, Lower Band, and Middle Line of the Bollinger Bands® indicator.
If in the process of creating or editing a Quagensia Function, you create an internal variable, then use it in one or more places as described above, then accidentally delete it, then for your own safety, Quagensia will not allow you to generate the code for a Quagensia Strategy or Quagensia Function that uses the Quagensia Function with the deleted internal variable, because the code generation engine won’t be able to locate the deleted internal variable by its Internal Variable ID, since it no longer exists.
If you notice your mistake soon after deleting the internal variable, you can “Undo” the deletion of the internal variable using the “Undo” toolbar button, menu item, or keyboard shortcut (Ctrl-Z).
However, if you notice your mistake too late, and don’t have a backup of the Quagensia Function, you can create another internal variable with the same or similar name as the internal variable you accidentally deleted, then use the “Change Internal Variable ID” window to set the new internal variable’s Internal Variable ID to the same value as the Internal Variable ID of the internal variable that was accidentally deleted.
You can open the “Change Internal Variable ID” window by clicking on the button to the right of the “Internal Variable ID” field, which is displayed when you click the internal variable’s “Advanced Fields” link button.
Note that changing an internal variable’s Internal Variable ID from the “Change Internal Variable ID” window will save the Quagensia Function file’s unsaved changes permanently to disk in the same way that pressing the “Save” toolbar button or clicking on the main menu “Save” menu item does. Note also that the list of undo-able changes will be cleared, so all changes made to this Quagensia Function since the last time the Quagensia Function was loaded from disk won’t be able to be undone by pressing the “Undo” button.
If you have any doubts, create a backup of your Quagensia Function file first, then change the internal variable’s Internal Variable ID to permanently change the Quagensia Function, permanently save the changes to disk, and lose the list of undo-able changes since the last time the Quagensia Function was loaded from disk.
