$increaseServerVar
To increase server variable with a certain amount
Usage
$increaseServerVar[variable name;amount/expression;default amount (default is 0)]
Example (increase ticket numbers by 1):
$increaseServerVar[ticket numbers;1]
To increase server variable with a certain amount
$increaseServerVar[variable name;amount/expression;default amount (default is 0)]
$increaseServerVar[ticket numbers;1]