Local variables in server+several clients license.

As the name implies, Local Variables are local for each and every Citect process and/or machine. If you want to use variables across multple clients and servers you have to use normal Variable Tags. You can define a Persistent Memory I/O Device for that purpose. Only drawback is that these tags count as I/O points in your license (if I recall correctly).

AFAIK, persisted memory tags don't count towards your point count.

From the help:
About Plant SCADA > Licensing > Dynamic Point Count

• Persisted I/O (memory devices), local variables and disk I/O variable tags will not count towards the dynamic point count, unless they are written to by an external source (via OPC, DDE, ODBC, or CTAPI). For example, if you use an OPC client to write to a local variable, each local variable will be counted once the first time it is used.

Thank you everybody.