Unable to pick existing model to dimension the sketch 1

[rocket100]

Hi Fellows,
It may be a very simple question but I can’t figure it out. When I create a sketch on the top of the extruded model, I am unable to pick the corners of the model to dimension the sketch. Please see attached picture.
I am using NX8.5 but I never had this problem in NX8.
Cheers

Regards
Rodney

 

[dzupfrg]

Enable menu "Within Work part only" in sketch.

NX 8.5.1.3

 

[rocket100]

Thanks, it works great.

 

[adam86]

I have also notived that the default option when is a sketch has changed from "Within Work part only" to "Associated Sketch". Although generally sketches are on co-ordinate systems anyway, its sometimes not to create references to exsiting edges etc