modify_variable
Modify the value of one of the logic variables
Each group come with a set of 4 variables with id 0 to 3.
Variables are floating point value.
Each group come with a set of 4 variables with id 0 to 3.
Locals variables are the variables of the current group, they are expressed with a 'v' followed by the variable id (0-3). eg : v0.
Foreign variables are accessible only if the group name is unique in the manager or in the world.
Foreigns variables are variables that come from another group. They are expressed with the group name followed by a colon ':' then followed by a local variable identifier (v). eg : group_1:v2.
Constant value are floating point numerical expression in base 10.
Parameters:
<local_variable | foreign_variable> < = | + | - | * | / > <local_variable | foreign_variable | constant_value>