automation roll up original estimate from subtask to story

[Lior]

Hello everyone

I wanted to create an automation that would roll up sum of  filed original estimate field from all the subtask to story  and the problem is that it don't sum up the original estimate to me properly

for example 
i enter 1m to original estimate in subtask 

This is the set automation i used  but i tried also 

{{issue.subtasks.Original Estimate.sum}}

{{#=}}{{issue.subtasks.remaining estimate.sum}} / 60{{/}}

{{#=}}{{issue.subtasks.remaining estimate.sum}} / 3600{{/}}

Can you see in red  the result  the original estimate in story is to 1h 
and if i try 2m  in subtask is change the ordinal estimate in story to 2w  
אhere is no mathematical logic in numbers either

[Lior]

up

[Lior]

hello

????????