I wrote the following test to see what I would get tuning in on a localizer. I am surprised and puzzled. When I use this I get ILS/GS/DME/BC 1, -1, -1, 131 on an ILS/GS/DME ILS/GS/DME/BC 1, -1, 0, 131 on an ILS/BC/DMEAll A:Vars are boolean according to the Panel SDK. Never knew they could give -1. let alone 131I took the liberty to see what I would get changing FLAGS into FLAGIt will give 0 in both cases. That doesn't make sense either.How can I tell what kind of ILS I am approaching?This stuff doesn't make a lot of sense to me.Am I overlooking something?Roelof %LOC %((A:Nav1 has localizer,bool))%!5d!%DME %((A:Nav1 has dme, bool))%!5d!%GSL %((A:Nav1 has glide slope, bool))%!5d!%BC %((A:NAV1 BACK COURSE FLAG, bool))%!5d!

Well, I can't really help with the XML stuff, but some of the C variables are inverted also:HSI_VERTICAL_VALID is either 0 = OFF or -1 = ONStrange!