Assign boundary conditions by polygon

I am using FEFLOW 7.5 and want to assign a constant head boundary condition to several lakes on the top of my model. I want to assign data from the shapefile for lake polygons however when I create then link, select all polygons I receive an error 'invalid pointer' I follow a similar procedure for assigning conductivity (except for assigning a slice number) Is it possible to assign BCs automatically like this in FEFLOW? or is something likely wrong with my procedure?

Hi Joshua,

I have just checked with the latest FEFLOW release (FEFLOW 7.5 - Update 1). It seems this was an old bug, which has been fixed already.
In case you have any question, I encourage you to get in touch with the official technical support mike.de@dhigroup.com

Cheers
Carlos

Thank you - very helpful :)