Query with forms

Hi all

 I am trying to create a very simple form where a part of the operation involves selecting an instance from the layout and having it displayed in the String box field

Flow as below:

instSelField = hiCreateCyclicField(

      ?name           'instSelField

      ?choices        list("None" "Select from EV View")

      ?prompt         "Select from"

      ?defValue        "None"

      ?callback        "GetCellInstance()"

       

);inpSelTypeField

 

instDisplayField = hiCreateStringField(

      ?name          'instDisplayField

      ?prompt         "Instance Name"

      ?value          "none"

      ?defValue        value

      ?editable        t

      )

 
value=GetCellInstance()

  procedure(GetCellInstance(f)

  prog((cell_view xx)

  cell_view=geGetEditCellView()

  if(frmSel="Select from V

  xx=car(geGetSelSet()~>name)  

  println(xx)

  return(xx)

  )

  )

    
RNetFileForm =hiCreateAppForm(

?name `RNetFileForm

?formTitle "Create R network Schematic"

?callback `RNetFileFormCB

?fields list(inpSelTypeField instSelField instDisplayField)

?help " "

?unmapAfterCB t

)

hiDisplayForm(RNetFileForm)

 
What I want to have is the following:

1. After selecting "Select from EV View", from instSelField, I want to be able to select the instance from the Layout view (Extracted view or layout)

2. The selected instance name should appear on the instDisplayField

I tried assigning the return value of the procedure that gets the instane name to defValue in instDisplayField but it never gets assigned.

I also need to be able to do this instance selection only when "Select from EV view" is clicked.

Any help?

Thanks