Add checkbox widget on data grid

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Hi, I am trying to add checkbox selector widget on  data grid.But when i added then i will get error “Path should contain at least one step”.I didn’t find solution of this error why it is coming.Any one have idea then please share with me.
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1 answers
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the Checkbox selector is used to set an association between objects. 

So it should be embedded in a Dataview and you need to configure the path (*-* reference)  which should be populated

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