Hi ​@norris From what I see, if you are trying to fill the <nulls> in the “test” column you could replace .fastigeter with .test
The way I read the example you have the red lines are what is being written from Fastigheter to test

Hope that helps.
 

The workbench does what you have defined.

I think,

else   featurer-1].test

delivers the desired result.

Hi,

Thanks for the suggestions ​@crutledge and ​@tomfriedl 

Apologies for not being clear in my original post. The screenshot to the right (in my original post) is what i get as a result from the AttributeCreator as I created a new column called “test” in the AttributeCreator. The “input” is the column “Fastigheter” and what i want is the column “test” to contain the filled row values.

Here is what the input table looks like (just dummy to test things)

here is what I wanted to do with AttributeCreator (but did with Python)

I did manage to get my desired result with pythoncaller but it would be nice to know how to get it to work using a transformer.

here is my python caller code if anyone was interested

class FeatureProcessor(object):
    def __init__(self):
        # Store the previous non-empty value
        self.previous_value = None

    def input(self, feature):
        # Get the current value of the 'Fastigheter' attribute
        current_value = feature.getAttribute('Fastigheter')

        # Check if the value is empty or None
        if current_value is None or current_value == '':
            # If empty, use the previous non-empty value (if available)
            if self.previous_value is not None:
                feature.setAttribute('Fastigheter', self.previous_value)
        else:
            # If not empty, update previous_value
            self.previous_value = current_value

        # Output the feature
        self.pyoutput(feature)

    def close(self):
        pass

Hi ​@norris ,

If I understand your requirement correctly, I think this setting  works as expected.

Thank you so much ​@takashi This worked perfectly!