Collection Operation Remove by Value Not Working

Have you tried remove duplicates first

and then remove "None"

I just tried remove duplicates and that didn't even remove the duplicates. I must be doing something wrong here, I just don't know what.

have you output your collection anywhere?  do you know what is in it?

Later in the workflow I use build string from that collection, then set a field to that string. I can see what is in it through that.

some screenshots may help here

Sure. Here are some that might be helpful.

The query where I output to the collection:

The collection operation:

And the output:

Looks to me like your Collection has line breaks in each value

So each one is:

"None

"

rather than "None"

Can you clarify in the source?

The source does not have line breaks. I did go ahead and try the

"None

"

but it didn't work either.

How do you fill this collection with its values - ie do you query a list?     Are you able to "trim" the values prior to putting them into the collection.   I suspect it is the whitespace following these, whereas value must match exactly.   

Yes, I'm querying the list to populate the collection. I've double checked the source and there are no extra spaces or line breaks in the data. I have tried removing the duplicates, but that doesn't work either.