I turned flock to 1 and i didn't get an error everything is working.
but if 2 user open a record and modify it there is no erro displayed like

stop sombody else is already working of this record

The last record who arives at the database is aded.

so i ask what is flock

ist there a mod that displayed an error if a record is allready open for modify it

(sorry for my bad english)

thanks