From Game Editor
You can define your own constants in Game Editor. Constants a about like variables, but constants can't be changed during the game. You can put a constant's name in any scripts and they will be replaced by their value when executing the game.
How to define constants
Open the global script editor and put in #define. Leave a space and type the name of this constant. Type the value after the name within a space.
Example:
#define TRUE 1 #define FALSE 0
In this example we define two constants, TRUE and FALSE.
Example for using:
textNumber = TRUE; myactor.textNumber = FALSE;
If you have defined these two constants before, the code above is completly the same as this:
textNumber = 1; myactor.textNumber = 0;