Hi Daniel,
the problem is in the documentation. Actually the parameter value must be string and not int, with the following possible values: "none", "manual", "auto".
E.g.:
modparam("uac","from_restore_mode", "auto")
It's o.k. now with this modification of the config-file.
I better should have read a few lines of code further the parameter declaration to detect the modification.
Thanks a lot. Franz