Host - Real Time Communication with Cluster

Hello,

i want to get and set different states from my host system to my rt system and visa versa.

For that i clustered all relevant states as boolean elements in a cluster.

E.g.  Host set the Flag "Get Data" to true; RT reads the flag, aquire data and set another flag "Data Ready" to true an

set the "Get data" to false". Its like a kind of handshake.

Whats the best way to realize that?

I tried with network variable, reading the cluster from the host was no problem, but i didnt know how to write/set the

flags during the  runtime of my RT.

Thanks in forward