Hi guys,
i want to add UoM to custom fields created by Studio. I tried this with "weight" and it works in that way:

But it doesn't work for "length":

First issue: length and length_uom_name are missing in the product.template. Nevertheless after adding the UoM I face the second issue: the configured units from uom.uom are not shown. the field is still empty. i would like to show "cm".

What is missing? Can someone help?

Thanks!