* gerard robin -- Wednesday 03 December 2008:
> I only  know that /gear folder under FG control , and the data
> which are there cannot be modified , read yes, write no, 

JSBSim manages this property and writes to it once per
FDM cycle[1], so several times per second. (YASim does the
same). If you change the property from Nasal, then you
have a good chance that it gets overwritten again before
something else can even see your value.

m.


[1] JSBSim.cxx:881 -- FGJSBsim::copy_from_JSBsim()

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