$existsParameter

Examines if the parameter for the dynamic function with the given number exists.
Syntax
    $existsParameter{par_number}
DocumentationExamines if the parameter for the dynamic function with the given number exists.
    Parameter:
      par_number, number of the parameter to check
    Result:
      1 if the requested parameter exists; 0 otherwise.
    Note:
      Also see $call, $callQuery, $getParameter, $createFunction.
Examples
    $// checks if parameter 1 exists .
    $if{$existsParameter{1}}
      {
      $getParameter{1}
      }
        {
        Parameter 1 doesnt exist.
        }
GroupSpecial
Minimum required transaction-mode:NONE
Required scripting permission of the developerPERMISSION_FL_ADVANCED
Minimum parameters1
Maximum parameters 1
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