Double reference selector interaction

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Hello everyone, Is it possible to have the selected value of one drop-down reference selector influence what values are selectable from another drop-down reference selector? For example, say that you want to choose a postcode from a drop-down, and then another drop down populates with addresses from that postcode. Any help is greatly appreciated – thanks.
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1 answers
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make association between with your postcode entity  and make association with address entity [1-*] 

make another entity helper  and make [1-1] association with postcode and address entity 

in a data view  choose datasource helper entity in data view Take two refrence selector  one is postcode and another is address and in address refrence selector  go to selectable  object tab and choose a constrained by path 

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