I am also looking to setup my RTMC PRO display so that with the click of a switch, you can show or hide a data series (Server:Base.Table1.T109_F_Avg). To do so, I have the switch writing to a virtual data source (Switch_Table:values.Temp_Base) and then the data series using the following expression. The virtual data source has an output interval of 100ms
Alias(Switch_Base,"Switch_Table:values.Temp_Base");
Alias(Base_Line,"Server:Base.Table1.T109_F_Avg");
IIF(Switch_Base=-1,Base_Line,NOPLOT);
When I go to RTMC Runtime to see if this functions, all it shows me is a red exclamation point without any useful error data.