Collection Manipulation - Filter

Hello,

I have a collection (Collection In) I want to filter out blank spaces from. As you can see from the picture with the error message, the filter (Filter) is working as intended, but it won't output to the new collection (Collection Out).
View attachment 1560322152567.png

The Code Stage that is failing is the default one shown in the picture. (Utility - Collection Manipulation - Filter)

Any tips would be greatly appreciated!

EDIT:

The Filter I'm using is the following:
Replace([Fradato.Fradato], " ", "")
 
Filter doesn't work with dots or spaces. I made a new object just for working with spaces and dots, but it's quite complicated.

Try looping it to find the string you're looking for, or replace it with calc (and assign back to collection) if you want to get rid of spaces.
 
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