|name||The name of the global variable to set (as a string)|
|val||The value to set the global variable to|
Returns: Value (any data type) or undefined (if the named variable does not exist)
With this function you can set the value of a given global
variable. You supply the name of the global variable to set the
value of as a string (see example code below), and then the
value to set (can be any valid data type).
If the global variable does not exist already in the game it will
be created and then assigned the value.
if !variable_global_exists(id, "enemy_num")
The above code will check to see if a global variable exists and if it does not then it is created and set to 0.