Request Closing When Tasks are completed

Request Closing When Tasks are completed

Hi,
I have one service catalog for a service which have multiple dependent tasks set to trigger for some technicians. I would like to know if there is any way to close the request automatically when all the dependent task are closed.
I am aware of the option in Request closing Rules. But I need this for only one service catalog. Is there any way to achieve this by a script or by any other means?
I would appreciate your thoughts on this.

Thanks
Ahamed

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