How to generate some pseudo-absence points with a specific distance from the presence ones in BackgroundSurfaceGenerator module

[Nader Habibzadeh]

I am new for VisTaril SHAM. I would generate pseudo-absence points which they should be on a specific distance of the presence points, but it seems that there is no options for it in BackgroundSurfaceGenerator module. It will give me pleasure any idea for this. I have also encountered the following error after running CrossValidationSplit module. thanks for any comments.
Sincerely,
Habibzadeh