Thank you GerdW.
I still didn't find the "history size", but it's more important for me
to know how to show e.g. value type 2 within a special time span. Do
you know a solution for this? I think the "history size thing" is no
solution for this problem as I maybe want to make calculations with
these values.
I found the history data in the property node, thanks!
Other suggestions for my other problems (see e.g. saving frequency
based on a calculation with local variables) are more than welcome; )
Thanks to everybody in advance!
Steffi