The variables page shows the variables you selected when creating your model. In the picture below, name represents the specific variable and property represents any operation done to the variable to normalize it, such as trading days in a year (252 days), percent change, or standard deviations.
Variables do not change over time. Once a model has been trained, the variables cannot be changed. If you want to change the variables in your model, duplicate the model to draft and retrain it, or create a new model from scratch.