unset the fixed minimum/maximum custom indicator

[Soewono Effendi]

How can I unset the "fixed minimum/maximum" of a custom indicator progammatically ?

It is easy to set using IndicatorSetInteger()

- INDICATOR_MINIMUM

- INDICATOR_MAXIMUM

but I can not find a way to unset them so that the chart will autoscale the indicator again.

Thank you for any constructive hints.