I set units to meters,adjusted grid(line every one meter)
Then imported model from another app as 3ds file...
Model appeard very small,so I scaled it to get it match the dimensions(accordin to grid)...
Now,I know that I have to reset scale before exporting,did so,and for some reason scale comes to 100,100,100,instead of 1,1,1...So aircraft appears huge in sim...
The second issue is that when exporting Gmax's reporting that my units are not meters....

The first thing that I did in Gmax is setting units to meters...
What daz he want,guys?????!!!!