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Online Scripting Reference

add

Purpose
Adds a value to a variable.

Syntax
add var {value}

var: The variable that will have its value added to.

{value}: The amount the variable will be increased by (must be a number).



Notes
This command is a typical way to perform basic mathematics within TWX script.

Since mathematical and logical operators were introduced in v2.00, it is also possible to add to a variable using the following method:

setVar $value ($value + 1)

Example
# calculate exactly how many trips we're making
# and how much we're carrying on our last trip

setVar $trips $quantity
divide $trips $holds
setVar $x $trips
multiply $x $holds
setVar $lastTrip $quantity
subtract $lastTrip $x
if ($lastTrip = 0)
  setVar $lastTrip $holds
else
  add $trips 1
end




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