<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi Mohamad,<div class=""><br class=""></div><div class="">the feature is implemented, yes. However, it is not the “CFC” feature, but is called “bidirectional”. You need to add two lines like so</div><div class=""><br class=""></div><div class=""><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class="">*biopt  30 ../zones/geniusinternal_wsv.csv</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""> 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0</div></div><div class=""><br class=""></div><div class="">in your .cfg. The “1” says, this surface (surfaces simply numbered across all zones) uses the data from the .csv file which looks like the attached.</div><div class=""><br class=""></div><div class="">I haven’t used this for quite some time, so I have no idea if the feature is still functioning correctly “out of the box” and can’t say where in prj you can find the interactive setting-up of this. Hope it helps.</div><div class=""><br class=""></div><div class="">Best</div><div class="">Achim</div><div class=""><br class=""></div><div class=""></div></body></html>