Microvellum Community

FLATSHOT VIEW

Hi,
I'm trying to get a flatshot (front view) of one specific part/layer.
According to this reference:
https://community.microvellum.com/portal/en/kb/articles/microvellum-flatshot-token-reference#MICROVELLUM_FLATSHOT_DRAWING_TOKEN
Parameter 8 is used to filter that. 
My problem is that no matter I enter the part/layer with or without a "-" in front of it, the part is only filtered out, which means that I can only filter parts to avoid.
Could somebody do this test and let me know what am I doing wrong, please?

Thank you