How can I select one shape from in Layer?

 How  can I select one shape from in Layer?

I used command axlDBGetShapes("etch/top") to get all shapes (all l_dbid) from this layer.

But I did't known to get exactly one shape, example I want to get DBID of shape at:

**************************************************
      class         ETCH
       subclass      TOP

  part of net name:  GND

  Connected pins:     1
  Connected vias:    30

  Shape is solid filled
  Area:  0.2920  (sq in)

Exterior boundary:
  segment:xy (-3110.000 1235.000) xy (-3110.000 1620.000) width (0.000)
  segment:xy (-3110.000 1620.000) xy (-3020.000 1710.000) width (0.000)
  segment:xy (-3020.000 1710.000) xy (-2605.000 1710.000) width (0.000)
  segment:xy (-2605.000 1710.000) xy (-2500.000 1605.000) width (0.000)
  segment:xy (-2500.000 1605.000) xy (-2500.000 1235.000) width (0.000)
  segment:xy (-2500.000 1235.000) xy (-2520.000 1215.000) width (0.000)
  segment:xy (-2520.000 1215.000) xy (-3090.000 1215.000) width (0.000)
  segment:xy (-3090.000 1215.000) xy (-3110.000 1235.000) width (0.000)

  Number of voids: 0

  Properties attached to net
    LOGICAL_PATH      = @cobra.cobra(sch_1):gnd
    NET_PHYSICAL_TYPE = PWR
    
*******************************************************  

Can you help me.


Thank you

Elek