Hey,
I already created three custom_fields in Asana via Python API.
Now I would like to fill it with a term like: value(field3) = value(field1) - value(field2) via Python API.
Does anyone know if this works? Any helpful ideas?
Regards, Anna
Hi,
You need to run a task update and give values for those fields. The API doc as well as the Python lib example will be able to help. Otherwise come back here 
Thanks, Bastien!
Do you know how to get the value from a field?
So I can fill another field with something like this: value_field1 = get_value_field2 * get_value_field3…
You need to use the right opt_fields when reading a task to have access to custom fields.