What problem with Line update

Troubleshooting graphics
1

i have a problem to update Line object.

I have initiated shape from Line like this code:


Vector3f delta = min.subtract(max);            
      corner[0]=new Vector3f(min);
      corner[1]=new Vector3f(min.x-delta.x,min.y,min.z);
      corner[2]=new Vector3f(max);
      corner[3]=new Vector3f(min.x,min.y,min.z-delta.z);      
      Vector3f vertex[]=new Vector3f[8];
      vertex[0]=corner[0];
      vertex[1]=corner[1];
      vertex[2]=corner[1];
      vertex[3]=corner[2];
      vertex[4]=corner[2];
      vertex[5]=corner[3];
      vertex[6]=corner[3];
      vertex[7]=corner[0];
      Vector3f normal[]=new Vector3f[8];
      for (int i = 0; i < 8; i++) {
         normal[i]=Vector3f.UNIT_Y;
      }      
      line=new Line("line",BufferUtils.createFloatBuffer(vertex),BufferUtils.createFloatBuffer(normal),null,null);      
      line.setLightCombineMode(LightState.OFF);
        line.setLineWidth(1.2f);
        line.setDefaultColor(ColorRGBA.green);        
        this.attachChild(line);       



I want update on runtime. I try to use reconstrucs method but it doesn't make any changes. My update procedure is


public void updateLine(Vector3f min,Vector3f max){
      this.detachChild(this.line);
      float y=min.y>max.y?min.y:max.y;
      min.y=max.y=y;   
      Vector3f delta = min.subtract(max);            
      corner[0]=new Vector3f(min);
      corner[1]=new Vector3f(min.x-delta.x,min.y,min.z);
      corner[2]=new Vector3f(max);
      corner[3]=new Vector3f(min.x,min.y,min.z-delta.z);
      
      Vector3f vertex[]=new Vector3f[8];
      vertex[0]=corner[0];
      vertex[1]=corner[1];
      vertex[2]=corner[1];
      vertex[3]=corner[2];
      vertex[4]=corner[2];
      vertex[5]=corner[3];
      vertex[6]=corner[3];
      vertex[7]=corner[0];
      Vector3f normal[]=new Vector3f[8];
      for (int i = 0; i < 8; i++) {
         normal[i]=Vector3f.UNIT_Y;
      }            
      line.reconstruct(BufferUtils.createFloatBuffer(vertex), BufferUtils.createFloatBuffer(normal),
            null, null);         
      line.updateGeometricState(0, true);      
   }


And i don't find any method to update this geometry. Any one can give idea??
2

well, to me it looks like your are removing the line from  the parent, then reconstructing (the no orphaned node), then updating the line node (which remains orphaned). 



I think you want to update the parent (possibly this.updateGeometricState( 0, true) judging by your post) and/or maybe not orphaning the line in the first place.