ID of the group in the trends server, from which the data have to be read.
The property is used either for reading or it can be used for the consecutive calling the Connect method (respectively only when the nType parameter passed to this method equals 0)
If the tvTrend object has already been connected to any data source (server) before writing into this property, by writing into this property the change of the connection doesn't happen (only the configuration of the object changes). For the real change it is necessary to call the Connect method.
If the ConnectionType property is set to 1 (local connection) or to 2 (remote connection), then the value of this property must be set, for example, to the string "group1", where the group1 is the name of the group in the trends server. See the configuration of the PmTrend Promotic object.
oTrend.ConnectionGroup = string