I want to build some mounds of snow alongside a swept runway. I can use Novasim to build the mounds but there is no inbuilt function to make the .api macro only appear in winter. I believe the "IfVarRange" parameter in the .api macro needs to be changed to do this. Can anyone tell me the code please?Thanks in anticipation,John

Try to place this directly after the Area command:[tt]IfVarRange( : 6F8 0 0 )[/tt]A better option would probably be to use the day of the year (38A) instead of the season (6F8) variable, as the season variable does just split the year in four parts and does not consider that winter is longer on some places then on others, while the landclass/mesh scenery does consider that. But to get the day of the year working correct you would need to know which days belong to your area (Gerrish Grey did some research on that).

Thanks for you prompt reply Arno. I just tested the 6F8 variable and that works fine for mid-winter. I understand what you are saying about the length of seasonality and have the problem you refer to with my ground tiles. I used "Groundmaker" to bolt together 516 x 516 tiles and that works fine but there is a mismatch in the seasonal dates between it and FS9 that I do not know how to correct.I would like to explore the 38A code a little more and if you could tell me how to specify the start and finish date in the macro I might be able to look at the "Groundmaker" code and correct that too.John

Then you would have to try something like this:[tt]IfVarRange( :toend 38A 60 330 )Jump32( :showit ):toendJump32( : ):showit[/tt]Because winter normally goes over the new year you can't check it with one statement. I chose to use the reverse check (so no winter) and then jump to the correct source. You could also use two IfVarRange commands to check the end of the year and the begin. In this case I assumed winter is roughly december till february, but that should be adjusted for your region of course.

Thanks Arno, that's very useful. I will get working on it this afternoon.John