How to make multiple selection dropbox/checkbox with many-on-may entities

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Hi all! Encountering a problem:   I’am making a movie database where entity Movie has a many-to-may association with the entity MovieType. I need to add a new movie and while doing this I want to be able to select multiple types (and if the type is not yet existing add it via a popup page)   I’m using the Reference Set Selector but he does not want to give me a list of my existing types AND he gives me the posibility to add a new type via my pop up BUT I cannot create my object needed in my popup…   Any idea? I’m sure this is possible without any microflow ;)   Thank for help!  
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Found another widget: the input reference set selector! Still has some beauty points to be taken care of I agree...

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