MODVAR allows the user to type in a new value for a variable. txt contains the name of the Constant or Game Input for gaming. A | separates the name from prompt information. acc, optionally, contains range information used in the validation of the user's input.
MODVAR,"PERCENT BUDGET ADV",25,44,15,0,L,[0|10|6]
Here the value 6 (the original model value) is used for missing to allow entry of only changed assumptions. When this variable takes on a value of 6 the editing box created for the modification of the variable will be left empty.
If you ask to modify a variable that is not contained in the model you are working with MODVAR will display error in the editing window. If you ask to modify a Game variable and the game is not running MODVAR will display Game Over in the editing window.
Note that for String Variables MODVAR will let the user set a string value for the variable. This can later be used with SHOWVAR to display the user defined label.
