How to use dialog in bpmn-js-properties-panel User assignment?

Developers Modeler
1

In properties panel , user assignment use input，

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. If I want to use dialog,for example,I click this input,pop up a dialog,I select values,get this values into input，How do I do it

2

Hey @dengry518 were u able to achieve this?
even i am stuck up with the same problem