$decVariable

Substracts the specified decimal value and the value of the named variable.
Syntax
    $decCurrent{variable_name}{decimal_value}
    $decVariable{variable_name}
DocumentationSubstracts the specified decimal value and the value of the named variable:

    Parameters:
      variable_name, the name of the variable whos value is to be decremented.
      decimal_value, an optional parameter that defaults to 1 and represents the decrementation amount of the variables value.
    Throws:
      an java.lang.IllegalArgumentException if the named variable does not exist.
      an java.lang.NumberFormatException if 'decimal_value' or the variable's value is non numeric decimal.
Examples
The following expression decrements the variable named 'value'

    $if{$existsVariable{value}}
      {
      $decVariable{value}
      }
    and is equivalent to the expression

    $if{$existsVariable{value}}
      {
      $setVariable{value}{$add{$getVariable{value}}{-1}}
      }
    or equivalent to the expression

    $if{$existsVariable{value}}
      {
      $setVariable{value}{$dec{$getVariable{value}}}
      }
The following expression substracts the variable named 'value' and the number 7

    $if{$existsVariable{value}}
      {
      $decVariable{value}{7}
      }
    and is equivalent to the expression

    $if{$existsVariable{value}}
      {
      $setVariable{value}{$add{$getVariable{value}}{-7}}
      }
    or equivalent to the expression

    $if{$existsVariable{value}}
      {
      $for{$set{counter}{0}}{$less{counter}{7}}{$incLocal{counter}}
        {
        $setVariable{value}{$dec{$getVariable{value}}}
        }
      }
GroupMath
Minimum required transaction-mode:UPDATE=TREE
Required scripting permission of the developerPERMISSION_FL_BASIC
Minimum parameters1
Maximum parameters 2
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