Nadya,

You seem to be answering your own questions today...

Now for the 2nd part of the quetion (before you answer it)

vfp gets kind of confused if you use a class. Things are cached in memory.
Write yourself a little prg (eg env) that does those kind of things like clear all, ....

make a habit of following sequence
- modify a class/prg/form
- test it
- do env
- back to top

If you don't, the sources of the classes/forms may sometimes disappear for a while


>
>So, the first part of the question is closed. I spent more than 1h. trying to debug it :(
>
>>
>>Another problem with this project, that I get "Class is in use " error message lots of times. Suppose, I opened some cntObject for modification, then closed it. After this procedure I can not modify btcc_valrange without clear all.
>>
>>That's really frustrting :(
>>
>>Thanks a lot in advance.