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This sample macro is called padCost. It takes 1 parameter - a numeric value. It checks to see if the numeric value is missing a 0 before a decimal point. If so, it adds the 0 and returns the string. It can be called anywhere in phixflow that an expression can be entered (for example) with :

padCost(".977")

do(
  $val = $args[1],
  if( startsWith($val, "."),
    // if the cost is positive, add a zero onto the beginning
    "0" + $val,
    // ELSE
    if( startsWith($val, "-."),
      //if the cost is negative, replace the -. with a -0.
      "-0." + substring($val,3),
      //ELSE
      $val
    )
  )
)

See Also

• Forms