Thickening a face

I have been working on some code for a long time and it hasreally got me
Basically I want to perform the following:

1) loop through all the faces of a certain body
2) select each and every face
3) use the the featurebossthicken method to create a new body fromeach face

I have managed to cycle through the faces and used entity.select4to select each and every face, however I didn't manage to thickenthe face.

has anyone got any ideas? should I be selecting the surfacesunderlying the faces instead? If so how do I do that?

Thanks in advance
J. SivanSolidworksApi macros