s7Graph -manual mode

Hello

Im dealing now with problem of manual choosing a step in the GRAPH.
I have block and application version >5.x, the interface of the FB looks "standard"

It's well described here,
http://support.automation.siemens.c...anual+preselection&ID=22447162&ehbid=22447162

but the remedy is totally unclear for me. What I should do?

I've found the post with the same problem but still unresolved.

http://www.automation.siemens.com/WW/forum/guests/PostShow.aspx?PostID=190233&language=en